Böcker av Yun Zhang

The book focuses on the topologies of non-isolated DC-DC converters with a wide voltage gain range for renewable energy systems. It addresses both theoretical principles and engineering practices. Each chapter introduces a family of non-isolated DC-DC converters, including advanced control methods. The inclusion of modeling and experimental verification provides in-depth applications in fuel cell vehicles, electric vehicles with multiple sources including batteries and super-capacitors, and photovoltaic systems. The book is beneficial for researchers, engineers, and graduate students in the fields of renewable energies, as well as electrical and electronic engineering.

小说讲述了加拿大华二代杜博远在北大做外教的一年中，对中国从抵触、陌生，到认可的过程。通过人物之间的情感纠葛、成长经历，展现了处在大变革时代的青年人，虽然各自有不同的精神困境，但经过种种磨难，最终都找到了实现人生梦想的归途。

This book explores international practice in landscape architecture, focusing on the provision of services from Australia to China during China's contemporary urbanization and Australian landscape architects' approaches to place.

This book explains the increasingly turbulent Sino-Japanese relations since the 2000s by innovatively investigating the formation mechanism of mutual misperception deeply rooted in China-Japan-U.S. trilateral structural dynamics.