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With the popularization of mobile Internet devices, more and more teenagers use smartphones. The use of mobile phones can not only bring convenience to young people, but at the same time, improper use and dependence may also lead to the risk of addiction and harm the physical and mental health of young people. With the development and influence of positive psychology, the meaning of life plays an important role in preventing adolescents' psychological and behavioural problems. Individuals with a high sense of life are less likely to become addicted to mobile phones. Based on this, it is possible to prevent and alleviate the problem of mobile phone addiction by enhancing the sense of life, improving self-control, and paying attention to positive psychology and group counselling interventions.

The purpose of the article is to analyze the main aspects of approaches to the periodization of the formation and development of Chinese piano culture. The research methodology is based on a combination of general scientific methods of philosophy, culturology, history, and musicology. The methodological basis of the study was a set of methods: historical and dialectical – to analyze the dynamics of cultural and historical processes of development of Chinese musical art; culturological - to understand the dynamics of general cultural processes in the piano art of China; chronological, which makes it possible to understand the relationship of events in their sequence; theoretical generalization – to summarize the study; systemy – to systematize the typological features of approaches to the periodization of piano culture. The scientific novelty lies in the analysis of the peculiarities of approaches to the periodization of piano culture, and the definition of the main factors influencing the distinction from the standpoint of socio-historical, stylistic, and educational factors. Conclusions. Approaches to the periodization of China's piano culture tend to be systematized according to several factors. It is about organizing the results of contamination of foreign and domestic political aspects that affect the formation of cultural components of the era, namely social conditions, development of tools, education, and upbringing, as well as the nature of performance and concert activities.
Key words: piano culture, periodization, Chinese musical culture

PurposeThe purpose of this study is to explore a balanced understanding of the relationship between perceived occupational stigma and social workers' proactive behaviors in China. Drawing on cognitive appraisal theory, this study explored the mediating role of threat and challenge appraisals, as well as the moderating role of trait resilience.Design/methodology/approachData were collected using a time-lagged research design. The hypotheses were examined using a sample of 338 social workers in China.FindingsPerceived occupational stigma is appraised as both a challenge and a threat simultaneously. Challenge appraisal positively mediated perceived occupational stigma and proactive behavior, whereas threat appraisal negatively mediated this relationship. Trait resilience moderated the effect of threat appraisal, suggesting that perceived occupational stigma was appraised as a threat when trait resilience was lower (rather than higher), which then reduced social workers' proactive behaviors.Originality/valueThis study enriches the literature on perceived occupational stigma by identifying the relationship and mechanism of perceived occupational stigma-proactive behaviors and a boundary condition from the theoretical perspective of cognitive appraisals. It demonstrates both the positive and negative aspects of perceived occupational stigma as appraised by social workers in relation to an important workplace outcome of proactive behaviors. In addition, it offers a fresh approach by exploring perceived occupational stigma from the perspective of social workers.

"This study looks into the significance of a floating exchange rate regime, further development of foreign exchange derivatives market, and concurrent internationalization of the Renminbi (RMB) for a resilient, open, and growing Chinese economy. The first chapter analyzes the macroeconomic impact of foreign exchange intervention based on empirical studies on 26 economies, explaining why most countries favor a floating exchange rate regime under the existing international monetary system. The second chapter discusses the macroeconomic and microeconomic conditions that would facilitate a successful transition to a floating exchange rate. The final two chapters discuss the importance of further developing foreign exchange derivatives market in China and explores paths toward further opening-up of the capital market and internationalization of the RMB under a floating exchange rate. Based on authors' decades of reflections and systematic analysis on real cases both in China and abroad, the title sheds lights on China's exchange rate issues and research on the exchange rate policy. This book will be an essential reference for scholars, students, professionals, and policymakers interested in exchange rate, currency internationalization, financial market, especially derivatives market, and Chinese economy"--