内容简介：After spending ten years traveling with her two daughters, children's literature author Yan Jing wrote thousands of travel letters for them. This book selects 88 of those letters and includes replies from her daughters and husband. Through these letters, a bridge of love is built between parents and children, fostering genuine communication and mutual understanding within the family. For any family with daughters, this book helps build confidence in raising them. Raising daugh...

This unique volume focuses on the development of Chinese as a Second Language (CSL) teachers in the global context. It addresses the specific issues and challenges faced by CSL teachers and demonstrates international practices in the field. It also provides a comprehensive examination of their multifaceted professionalism from diverse perspectives.With the rise of China as a political and economic power, learning CSL has increasingly gained its popularity in a global context. Accor...

With the rapid development of robotics and communication technologies, maritime unmanned systems (MUSs) have emerged as a critical research domain due to their unprecedented capabilities in oceanographic data collection, environmental monitoring, and marine ecosystem studies. Specifically, MUSs refer to interoperable robotic systems operating synergistically in aerial, surface and underwater environments. At present, MUSs exhibit the characteristics of diversified sensing resources, decent...

Autonomous underwater vehicles (AUVs) are emerging as a promising solution to help us explore and understand the ocean. The global market for AUVs is predicted to grow from 638 million dollars in 2020 to 1,638 million dollars by 2025 – a compound annual growth rate of 20.8 percent. To make AUVs suitable for a wider range of application-specific missions, it is necessary to deploy multiple AUVs to cooperatively perform the localization, tracking and formation tasks. However, weak underwater...

Ocean covers 70.8% of the Earth’s surface, and it plays an important role in supporting all life on Earth. Nonetheless, more than 80% of the ocean’s volume remains unmapped, unobserved and unexplored. In this regard, Underwater Sensor Networks (USNs), which offer ubiquitous computation, efficient communication and reliable control, are emerging as a promising solution to understand and explore the ocean. In order to support the application of USNs, accurate position information from sensor...