This special issue on Context-Aware Systems: and Applications (ICCASA 2019) and Natute of
Computation and Communication (ICTCC 2019) in the ACM/Springer Mobile Networks and
Applications (MONET) Journal is a place for highly original ideas about how CA and Nature-
Inspiration are going to shape computing systems of the future. Hence, it focuses on rigorous
approaches and cutting-edge solutions which break new ground in dealing with the properties of CA
and Nature. Its purpose is to make a formal basis more accessible to researchers, scientists,
professionals and students as well as developers and practitioners in computer science by providing
them with state-of-the-art research results and future opportunities and trends.