Yang Jun

This book highlights a comprehensive overview of research and technical advances related to parametric array loudspeakers (PALs), covering modeling and simulation, measurements, signal processing, beamsteering, and their implementations and applications. PALs that can achieve directional sound reproduction have received widespread attention from global researchers due to their advantages of narrow beam, highly directivity, and very small sidelobes. PALs have developed rapidly in theory and application and have been used in various commercial products. At present, PALs have become a research hotspot in the field of audio engineering. The book is a must-have guiding reference for researchers, professionals and graduate students who seek to conduct further research on PALs.

This book highlights a comprehensive coverage of the science and technology of multi-orbit inter-satellite links. It describes the fundamental concepts and system requirements, presents the architecture and measurement principles and demonstrates the anti-interference design, access and slot planning, network transmission and routing, calibration and test evaluation, as well as applications for measurement and communication. Recent advances in theoretical research on precision measurement and communication are presented. The book serves as a reference for professionals involved in designing space-based information systems or developing satellite-ground equipment or services based on inter-satellite links. Additionally, it is also a valuable resource for teachers and graduate students in related majors.

This book is about examining the impact of trade openness by destination on human development in Sub Saharan African countries' strategic partnerships. Trade openness and human development are interlinked and the channels of impact can be either direct by widening the choices of living standards or indirect through channels such as economic growth. In the indirect channel, this book seeks to answer whether an improvement in the local domestic macroeconomic policies that target economic growth coupled with enhanced trade integration towards Sub Saharan African countries' strategic partners have actually led to an improvement in human development. Considering that trade openness, economic growth and human development are interrelated, we demonstrated this framework in a three-equation simultaneous equation modelling using multiple equation generalized method of moments. We found that Sub Saharan African countries' trade integration towards China offers wider opportunities for human development while for the indirect channel, we found that there was need for inclusive economic growth policies that incorporate human development elements.