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This book, which has been in the making for some eighteen years,
would never have begun were it not for Dr. David Dewhirst in 1976
kindly having shown the author a packet of papers in the archives
of the Cambridge Obser vatories. These letters and miscellaneous
papers of Fearon Fallows sparked an interest in the history of the
Royal Observatory at the Cape of Good Hope which, after the
diversion of producing several books on later phases of the
Observatory, has finally resulted in a detailed study of the origin
and first years of the Observatory's life. Publication of this book
coincides with the 175th anniversary of the founding of the Royal
Observatory, e.G.H. Observatories are built for the use of
astronomers. They are built through astronomers, architects,
engineers and contractors acting in concert (if not always in
harmony). They are constructed, with whatever techniques and skills
are available, from bricks, stones and mortar; but their
construction may take a toll of personal relationships, patience,
and flesh and blood."
This book, which has been in the making for some eighteen years,
would never have begun were it not for Dr. David Dewhirst in 1976
kindly having shown the author a packet of papers in the archives
of the Cambridge Obser vatories. These letters and miscellaneous
papers of Fearon Fallows sparked an interest in the history of the
Royal Observatory at the Cape of Good Hope which, after the
diversion of producing several books on later phases of the
Observatory, has finally resulted in a detailed study of the origin
and first years of the Observatory's life. Publication of this book
coincides with the 175th anniversary of the founding of the Royal
Observatory, e.G.H. Observatories are built for the use of
astronomers. They are built through astronomers, architects,
engineers and contractors acting in concert (if not always in
harmony). They are constructed, with whatever techniques and skills
are available, from bricks, stones and mortar; but their
construction may take a toll of personal relationships, patience,
and flesh and blood.
The study of cataclysmic variables - interacting binary stars
containing a white dwarf accreting from an orbiting companion - is
undergoing an exciting renaissance, as it embraces observations at
all wavelengths. Cataclysmic variables allow, in particular, the
direct and detailed study of equilibrium and non-equilibrium
accretion discs; in turn these developments also help in our
understanding of X-ray binaries, black holes and active galactic
nuclei. This timely volume provides the first comprehensive survey
of cataclysmic variable stars, integrating theory and observation
into a single, synthesised text. An introductory chapter gives the
historical background of studies of cataclysmic variables. The
author then goes on to give an up-to-date review of both the
observations (at all wavelengths, and over all time-scales), the
theories, the models of the structures and accretion processes
believed to be involved. A very detailed bibliography is also
provided to guide the reader to pertinent primary literature.
Explore Twisted, the Python-based event-driven networking engine,
and review several of its most popular application projects. It is
written by community leaders who have contributed to many of the
projects covered, and share their hard-won insights and experience.
Expert Twisted starts with an introduction to event-driven
programming, explaining it in the context of what makes Twisted
unique. It shows how Twisted's design emphasizes testability as a
solution to common challenges of reliability, debugging, and
start-to-finish causality that are inherent in event-driven
programming. It also explains asynchronous programming, and the
importance of functions, deferreds, and coroutines. It then uses
two popular applications, treq and klein, to demonstrate calling
and writing Web APIs with Twisted. The second part of the book
dives into Twisted projects, in each case explaining how the
project fits into the Twisted ecosystem and what it does, and
offers several examples to bring readers up to speed, with pointers
to additional resources for more depth. Examples include using
Twisted with Docker, as a WSGI container, for file sharing, and
more. What You'll Learn Integrate Twisted and asyncio using
adapters Automate software build, test, and release processes with
Buildbot Create clients and servers with Autobahn Transfer files
with Magic Wormhole Distribute cloud-based file storage with Tahoe
LAFS Understand HTTP/2 with Python and Twisted Support for
asynchronous tasks using Django Channels Who This Book Is For
Readers should have some Python experience and understand the
essentials of containers and protocols, but need not be familiar
with Twisted or the associated projects covered in the book.
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