.. _Chap:Acknowledgements: Acknowledgements ================= We are grateful to Ann Almgren, Andy Nonaka, Andrew Myers, Axel Huebl, and Weiqun Zhang in the Lawrence Berkeley National Laboratory (LBNL) for their discussions related to `AMReX `_ and `IAMR `_. Y.Z. and Z.Z. also thank Prof. Lian Shen, Prof. Ruifeng Hu, and Prof. Xiaojing Zheng during their Ph.D. studies.