This reprint aims to identify critical areas of water quality assessment, modeling, and mitigation in freshwater bodies, wastewater treatment, and groundwater aquifers, which require special attention

This book provides a systemized presentation of new techniques and methods in electronics manufacture. It helps the reader reduce the cost and increase the reliability of electronic products by employing up-to-date technology. It also details the latest ideas for reducing the scale of electronic components and products to the nano-scale by organizing all the elements of the complicated modern electronics manufacturing process showing how they affect each other.

Modelling is an activity that is found in every domain of research and science, and takes place even when we are not aware of it. The role of modelling and the quality of models are extremely important not only in engineering but for science in general.

Detailing a systems approach, Optical Wireless Communications: System and Channel Modelling with MATLAB®, is a self-contained volume that concisely and comprehensively covers the theory and technology of optical wireless communications systems (OWC) in a way that is suitable for undergraduate and graduate-level students, as well as researchers and professional engineers.

Variable speed is one of the important requirements in most of the electric drives. Earlier dc motors were the only drives that were used in industries requiring - eration over a wide range of speed with step less variation, or requiring fine ac- racy of speed control