Imagine yourself sitting on the cool damp earth, surrounded by deep night sky and fields full of fireflies, anticipating the ritual of initiation that you are about to undergo. Suddenly you hear the sounds of far-off singing and chanting, drums booming, rattles "snaking," voices raised in harmony. The casting of the Circle is complete. You are led to the edge of the Circle, where Death, your challenge, is waiting for you. With the passwords of "perfect love" and "perfect trust" you enter Death's realm. The Guardians of the four quarters purify you, and you are finally reborn into the Circle as a newly made Witch. Coming to the Edge of the Circle offers an ethnographic study of the initiation ritual practiced by one coven of Witches located in Ohio. As a High Priestess within the coven as well as a scholar of religion, Nikki Bado is in a unique position to contribute to our understanding of this ceremony and the tradition to which it belongs. Bado's analysis of this coven's initiation ceremony offers an important challenge to the commonly accepted model of "rites of passage." Rather than a single linear event, initiation is deeply embedded within a total process of becoming a Witch in practice and in community with others. Coming to the Edge of the Circle expands our concept of initiation while giving us insight into one coven's practice of Wicca. An important addition to Ritual Studies, it also introduces readers to the contemporary nature religion variously called Wicca, Witchcraft, the Old Religion, or the Craft.

Since the incorporation of scientific approach in tackling problems of optical instrumentation, analysis and design of optical systems constitute a core area of optical engineering. A large number of software with varying level of scope and applicability is currently available to facilitate the task. However, possession of an optical design software, per se, is no guarantee for arriving at correct or optimal solutions. The validity and/or optimality of the solutions depend to a large extent on proper formulation of the problem, which calls for correct application of principles and theories of optical engineering. On a different note, development of proper experimental setups for investigations in the burgeoning field of optics and photonics calls for a good understanding of these principles and theories. With this backdrop in view, this book presents a holistic treatment of topics like paraxial analysis, aberration theory, Hamiltonian optics, ray-optical and wave-optical theories of image formation, Fourier optics, structural design, lens design optimization, global optimization etc. Proper stress is given on exposition of the foundations. The proposed book is designed to provide adequate material for ‘self-learning’ the subject. For practitioners in related fields, this book is a handy reference. Foundations of Optical System Analysis and Synthesis provides A holistic approach to lens system analysis and design with stress on foundations Basic knowledge of ray and wave optics for tackling problems of instrumental optics Proper explanation of approximations made at different stages Sufficient illustrations for facilitation of understanding Techniques for reducing the role of heuristics and empiricism in optical/lens design A sourcebook on chronological development of related topics across the globe This book is composed as a reference book for graduate students, researchers, faculty, scientists and technologists in R & D centres and industry, in pursuance of their understanding of related topics and concepts during problem solving in the broad areas of optical, electro-optical and photonic system analysis and design.

More than 60 pagan leaders and teachers describe in their own words what they believe and what they practice. • Addresses how Pagans view parenting, organized religion, and politics. • Introduces the wide range of possibilities within the neo-Pagan movement. • By Ellen Evert Hopman, author of A Druid's Herbal for the Sacred Earth Year; Walking the World in Wonder: A Children's Herbal; and Tree Medicine, Tree Magic. Who are the pagans and what do they stand for? Why would some of the members of the best educated, most materially comfortable generation of Americans look back to mystical traditions many millennia old? During the last few decades, millions of people have embraced ancient philosophies that honor Earth and the spiritual power of each individual. Ways of worship from sources as diverse as the pre-Christian Celts, ancient Egypt, and Native American traditions are currently helping their followers find meaning in life while living in the Information Age. In this book Pagan leaders and teachers describe in their own words what they believe and what they practice. From Margot Adler, an NPR reporter and author of Drawing Down the Moon, to Isaac Bonewits, ArchDruid and founder of a modern neo-Druidic organization, those interviewed in this book express the rich diversity of modern Paganism. Hopman's insightful questions draw on her own experiences as a Pagan and Druid as well as on her extensive research. With coauthor Lawrence Bond, she examines how Pagans address such issues as parenting, organized religion, and politics. The resulting dialogues illuminate the modern Pagan revival.

This book offers an introduction to rough paths. Coverage also includes the interface between analysis and probability to special processes, Lévy processes and Lévy systems, representation of Gaussian processes, filtrations and quantum probability.

Twelve-year-old Kat tries to use her untrained magical powers to prevent use of the wild magic of Sulis Minerva found in Bath, England, where Stepmama has brought the family in hopes of finding Kat's sister a proper match.

Regency England's feistiest twelve-year-old is back! When Kat Stephenson's family arrive in Bath in search of a suitor for her sister, it's not long before Kat discovers that the town is fizzing with wild magic. Stumbling upon a plot to harness the magic in the Roman Baths, Kat finds that her brother has unwittingly become involved. To foil the plot and save her brother she must defy the Order of the Guardians and risk losing her magical powers, forever . . .

This textbook, for second- or third-year students of computer science, presents insights, notations, and analogies to help them describe and think about algorithms like an expert, without grinding through lots of formal proof. Solutions to many problems are provided to let students check their progress, while class-tested PowerPoint slides are on the web for anyone running the course. By looking at both the big picture and easy step-by-step methods for developing algorithms, the author guides students around the common pitfalls. He stresses paradigms such as loop invariants and recursion to unify a huge range of algorithms into a few meta-algorithms. The book fosters a deeper understanding of how and why each algorithm works. These insights are presented in a careful and clear way, helping students to think abstractly and preparing them for creating their own innovative ways to solve problems.

An inside look at the history and influence of New Age's spiritual home.

Crop circles: Hundreds of these strange patterns appear in our fields each year, their vast beauty inspiring awe and wonder. A sudden increase in their number throws Matt Lancing, maths student and amateur symbologist, into a world of intrigue. What is creating them? What is their message? Matt deciphers crop circles for a secret military group led by the mysterious Ember, a determined redhead with strange spiritual beliefs. Uncovering what makes the circles is just the beginning of his journey to a terrifying discovery. Warning: This well documented enigma will question your deepest illusions.