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Los Angeles has always attracted dreamers, schemers, visionaries
and true believers. These characters live hard and often die
dramatically, so it's no surprise this young city has collected
more than its share of memorable ghost stories. In Hollywood Ghost
Comix, Victor Avila extends a bony hand and pulls us into an
enticing spectral world where death can't still the striving of
iconic natives sons and daughters, and where seemingly ordinary
bars, supermarkets, nightclubs and landmarks thrum with mysterious
energies.
The mathematical description of shock waves has been a fundamental
challenge in Fluid Dynamics and became a real problem for the
calculations of the first thermonuclear explosions, during World
War II. Two famous mathematicians, Von Neumann and R. D. Richtmyer,
working at Los Alamos, addressed the issue by including an
artificial viscosity to smooth the shock transition. In general,
numerical solutions of hydrodynamic problems make use of two
different grid points to represent the relevant variables, namely
the Eulerian and Lagrangian representations. The arbitrariness
related to the selection of grid points, ad hoc, is examined in
detail in this book, as well as the reasons subjacent to the need
to introduce an artificial viscosity. A new approach to
Hydrodynamics is presented in which the specification of grid
points is considered an intrinsic part of the dynamic problem and
in which the discontinuities are taken into account in its own
formulation. Based only in the Hamilton's Principle a set of
differential equations is deduced for both dynamic variables and
grid points. The formalism is applied to the study and analysis of
supernova explosions.
Many books have been written about the history, secrets, and design
of Disneyland, but this guide looks at the California landmark from
a different angle. It explores the little known ghost stories and
strange folklore surrounding this famous tourist destination, and
offers new insights into this beloved theme park.
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