A Danish couple with two children face harsh conditions on their 19th Century Nebraska prairie farm. Will they survive blizzards, tornados, plagues of insects, arduous hauls for water, and long journeys to town for farm and household supplies? Peter is stubborn and contrary. Ellen Marie is sweet, congenial, and patient. Neighbors, craftsmen, and pastor reach out to help the struggling family. But Peter persists in his self-reliance. Will Peter ever bring water indoors to supply their home? Can anyone, anything, alter his course? Will he seize upon an opportunity provided by the challenges he...

This book constitutes the refereed proceedings of the 7th International Conference on Mathematical Methods, Models, and Architectures for Computer Network Security, MMM-ACNS 2017, held in Warsaw, Poland, in August 2017.