The idea for this text emerged over several years as the authors participated in research projects related to analysis of data from NASA's RHESSI Small Explorer mission. The data produced over the operational lifetime of this mission inspired many investigations related to a specific science question: the when, where, and how of electron acceleration during solar flares in the stressed magnetic environment of the active Sun. A vital key to unlocking this science problem is the ability to produce high-quality images of hard X-rays produced by bremsstrahlung radiation from electrons accelerated during a solar flare. The only practical way to do this within the technological and budgetary limitations of the RHESSI era was to opt for indirect modalities in which imaging information is encoded as a set of two-dimensional spatial Fourier components. Radio astronomers had employed Fourier imaging for many years. However, differently than for radio astronomy, X-ray images produced by RHESSI had to be constructed from a very limited number of sparsely distributed and very noisy Fourier components. Further, Fourier imaging is hardly intuitive, and extensive validation of the methods was necessary to ensure that they produced images with sufficient accuracy and fidelity for scientific applications. This book summarizes the results of this development of imaging techniques specifically designed for this form of data. It covers a set of published works that span over two decades, during which various imaging methods were introduced, validated, and applied to observations. Also considering that a new Fourier-based telescope, STIX, is now entering its nominal phase on-board the ESA Solar Orbiter, it became more and more apparent to the authors that it would be a good idea to put together a compendium of these imaging methods and their applications. Hence the book you are now reading.
The first advanced textbook to provide a useful introduction in a brief, coherent and comprehensive way, with a focus on the fundamentals. After having read this book, students will be prepared to understand any of the many multi-authored books available in this field that discuss a particular aspect in more detail, and should also benefit from any of the textbooks in photochemistry or spectroscopy that concentrate on a particular mechanism. Based on a successful and well-proven lecture course given by one of the authors for many years, the book is clearly structured into four sections: electronic structure of organic semiconductors, charged and excited states in organic semiconductors, electronic and optical properties of organic semiconductors, and fundamentals of organic semiconductor devices.
Drawing on urban and community resilience literature, Urban Preppers and the Pandemic in New York City: Class, Resilience and Sheltering in Place offers a detailed qualitative analysis of the impact of the COVID-19 pandemic on New York City and on the philosophy and practices of the city’s urban prepper subculture. With a special focus on the height of the pandemic in New York, this book considers the city’s unique position as the pandemic’s first epicenter in the United States. It also explores the lived experience of enduring the pandemic as reflections of class division, considering key themes, including the exodus of the wealthy, sheltering in place for the middle class, the inability to leave high-risk neighborhoods for the poor, and sheltering-in-place practices and community resilience efforts by New York preppers. It analyzes the importance of good government and an engaged citizenry in developing an agenda for the city’s continued recovery and its future, underscoring the need for cities to develop disaster management approaches that expand traditional “command and control” models to make space for local knowledge and resources. At its core, Urban Preppers and the Pandemic in New York City: Class, Resilience and Sheltering in Place is about understanding New York City’s pandemic experience and how self-reliance evolves into community resilience outside of institutions. It is vital reading for scholars and students of sociology, anthropology, geography and urban studies with interests in subcultures, ethnography and the sociology of disasters.
After an unforgettable trip to the UK, I began documenting my experiences with brochures and postcards, unaware that my maternal grandfather's suggestion would spark the journey of a lifetime. While this book falls under the travelogue category, it defies conventional expectations. It’s a vibrant blend of narrative storytelling, and family dynamics, where each chapter reads like a delightful episode filled with quirky anecdotes and heartfelt moments. With each turn of the page, you’ll laugh, reflect, and perhaps even recognize a bit of your own family in our escapades. In this travelogue, my family members take center stage as exaggerated versions of themselves, each infused with their own unique quirks and charm.
For eight of her 16 years Carolina Mitchell's older sister Hannah has been a nun in a convent, almost completely out of touch with her familyNso when she suddenly abandons her vocation and comes home, nobody knows quite how to handle the situation, or guesses what explosive secrets she is hiding.
A moving, lyrical, melancholy, and spiritual novel by the acclaimed author of The Night Child, in which Sister Angeline, unwillingly sent to a radical convent and confronting her tragic past, asks the deep question, follow your heart or follow the rules? After surviving a tragedy that killed her entire family, sixteen-year-old Meg joins a cloistered convent, believing it is her life’s work to pray full time for the suffering of others. Taking the name Sister Angeline, she spends her days and nights in silence, moving from one prayerful hour to the next. She prays for the hardships of others, the sick and poor, the loved ones she lost, and her own atonement. When the Archdiocese of Chicago runs out of money to keep the convent open, she is torn from her carefully constructed life and sent to a progressive convent on a rocky island in the Pacific Northwest. There, at the Light of the Sea, five radical feminist nuns have their own vision of faithful service. They do not follow canonical law, they do not live a cloistered life, and they believe in using their voices for change. As Sister Angeline struggles to adapt to her new home, she must navigate her grief, fears, and confusions, while being drawn into the lives of a child in crisis, an angry teen, an EMT suffering survivor’s guilt, and the parish priest who is losing his congregation to the Sisters’ all-inclusive Sunday masses. Through all of this, something seems to have awakened in her, a healing power she has not experienced in years that could be her saving grace, or her downfall. In Angeline, novelist Anna Quinn explores the complexity of our past selves and the discovery of our present truth; the enduring imprints left by our losses, forgiveness and acceptance, and why we believe what we believe. Affecting and beautifully told, Angeline is both poignant and startling and will touch the hearts of anyone who has ever asked themselves: When your foundations crumble and you’ve lost yourself, how do you find the strength to go on? Do you follow your heart or the rules?
The idea for this text emerged over several years as the authors participated in research projects related to analysis of data from NASA's RHESSI Small Explorer mission. The data produced over the operational lifetime of this mission inspired many investigations related to a specific science question: the when, where, and how of electron acceleration during solar flares in the stressed magnetic environment of the active Sun. A vital key to unlocking this science problem is the ability to produce high-quality images of hard X-rays produced by bremsstrahlung radiation from electrons accelerated during a solar flare. The only practical way to do this within the technological and budgetary limitations of the RHESSI era was to opt for indirect modalities in which imaging information is encoded as a set of two-dimensional spatial Fourier components. Radio astronomers had employed Fourier imaging for many years. However, differently than for radio astronomy, X-ray images produced by RHESSI had to be constructed from a very limited number of sparsely distributed and very noisy Fourier components. Further, Fourier imaging is hardly intuitive, and extensive validation of the methods was necessary to ensure that they produced images with sufficient accuracy and fidelity for scientific applications. This book summarizes the results of this development of imaging techniques specifically designed for this form of data. It covers a set of published works that span over two decades, during which various imaging methods were introduced, validated, and applied to observations. Also considering that a new Fourier-based telescope, STIX, is now entering its nominal phase on-board the ESA Solar Orbiter, it became more and more apparent to the authors that it would be a good idea to put together a compendium of these imaging methods and their applications. Hence the book you are now reading.
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