Radio Techniques For Probing The Terrestrial Ionosphere

This book is intended for specialists in systems engineering interested in new, general techniques and for students and practitioners interested in using these techniques for solving specific practical problems. For many real-world, complex systems, it is possible to create easy-to-compute explicit analytical models instead of time-consuming computer simulations. Usually, however, analytical models are designed on a case-by-case basis, and there is a scarcity of general techniques for designing such easy-to-compute models.

The Pennsylvania Dutch are noted for the beautifully designed and hand-lettered documents known as fraktur. These include birth and marriage certificates, family trees, bookplates, awards, and house blessings. Leading fraktur artist Ruthanne Hartung adapts the craft to modern tastes and needs in this practical how-to book, with information on tools, step-by-step instructions, ideas for design, lettering and coloring techniques, and a variety of projects. An assortment of traditional patterns to apply to personal frakturs are included.