Best Selling Books by Patrick Ryan

Describes the geography, history, people, and customs of South Africa

Large simulation cell sizes, relativistic effects, and the need to correctly model excited state properties are major impediments to the accurate prediction of the optical properties of candidate materials for solid-state laser crystal and luminescent applications. To overcome these challenges, new methods must be created to improve the electron orbital wavefunction and interactions. In this work, a method has been developed to create new analytical four-component, fully-relativistic and single-component scalar relativistic descriptions of the atomic orbital wave functions from Grasp2K numerically represented atomic orbitals. In addition, adapted theory for the calculation of the relativistic kinetic energy contribution to Hamiltonian which bypasses directly solving the Dirac equation has been explicated. The orbital description improvements are tested against YAG, YBCO, SnO2 and BiF3. The improvements to the basis set reflect an improvement in both computational speed and accuracy

Offer a child a ticket to explore a new world! Each title covers one fascinating nation and vividly portrays its key features--from rugged mountains to tropical beaches, from ancient ruins to bustling streets. Students take a private journey with full-color photo essays, plentiful maps, a native-language word list, and fascinating details about each country''s food, special celebrations, and pastimes. Sources for further research, including Web sites, are especially useful for reports.

Discusses the history, geography, economy, and social customs of Poland.