Although previous studies have explored relationships between psychological abuse and social support, the pathways from psychological abuse to social support are still unclear, particularly in Chinese adolescents. This cross-sectional study attempts to delineate the prevalence of psychological abuse and explore the relationships between psychological abuse, social support, and self-esteem under the Chinese cultural context. Data were obtained from 417 Chinese adolescents aged 15–18 years old. All of them completed the Child Psychological Abuse and Neglect Scale, Rosenberg Self-Esteem Scale (SES), and Multidimensional Scale of Perceived Social Support (MSPSS). Results indicated that the prevalence of psychological abuse in Chinese adolescents was 25.66%, and psychological abuse was negatively associated with self-esteem and social support, respectively. Self-esteem partially mediated the relationships between psychological abuse and social support. Findings highlight the importance of improving self-esteem in survivors of psychological abuse for decreasing the negative effects on social support. Additionally, the significance and limitations of the results were discussed.

This study presents the design of capacitive wireless power transfer systems based on a suboptimal Class-E 2 converter approach. The main reason for selecting the suboptimal Class-E 2 converter is due to its ability of maintaining its high efficiency over a wide bandwidth of operation frequency. However, Class-E 2 converters in general are sensitive to its load's variation. This variation greatly affects the output voltage and increases the switching loss of the system. Motivated by this drawback, the authors develop an auto-frequency tuning mechanism based on a PI approach for the suboptimal Class-E 2 converter to regulate the output voltage and minimise the switching loss. A non-contact communication mechanism is also developed to transmit the secondary side's measurements to the primary side. Finally, simulation and experiment are carried out to verify the effectiveness of the auto-frequency tuning mechanism.

Although associations between physical or sexual abuse and aggression have been mainly explored, relationships and pathways between childhood emotional maltreatment and aggression need further exploration, particularly in the Chinese cultural context. This study aimed to explore the associations between childhood emotional maltreatment and aggression and to examine the mediating effects of resilience and self-esteem on those associations. Data were obtained from a convenience sampling of 809 (aged 17–23) college students from three Chinese universities in December 2021, which was approved by the ethics committee of Beijing Normal University, China. All participants completed measures of childhood emotional maltreatment, aggression, resilience, and self-esteem. The results showed that childhood emotional maltreatment was positively associated with aggression (r = 0.41, p < 0.01), and it was negatively associated with resilience (r = −0.56, p < 0.01) and self-esteem (r = −0.10, p < 0.01). Regarding the mediation processes, resilience and self-esteem partially mediated the relationships between childhood emotional maltreatment and aggression. These findings underscore the importance of enhancing levels of resilience and self-esteem in interventions designed to reduce aggression of college students who were emotionally maltreated in childhood.

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Although some studies have explored the relationships between childhood maltreatment and life satisfaction, few studies have explored the pathways between those two variables in a sample of student preschool teachers. The current study, thus, attempts to explore the relationships between childhood maltreatment and life satisfaction in Chinese student preschool teachers and to examine the roles of resilience and social support in those relationships. A total of 1218 students majoring in early childhood education were recruited from three Chinese universities to attend this study. Self-reported questionnaires were used to collect data, and structural equation modeling was used to perform data analysis. Results showed that childhood maltreatment was negatively associated with life satisfaction in Chinese student preschool teachers; resilience and social support mediated those relationships. The findings suggest that childhood maltreatment not only has a direct relationship with life satisfaction, but also has an indirect relationship with life satisfaction via resilience and social support. Childhood maltreatment should be considered when enrolling student preschool teachers, and increasing levels of resilience and social support should be meaningful approaches when cultivating student preschool teachers who have experienced childhood maltreatment.