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A Journey into Reciprocal Space

Author : A.M. Glazer

Publisher : Morgan & Claypool Publishers

Page : 203 pages

File Size : 42,16 MB

Release : 2017-11-16

Category : Technology & Engineering

ISBN : 1681746220

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Book Description

The concept of reciprocal space is over 100 years old, and has been of particular use by crystallographers in order to understand the patterns of spots when x-rays are diffracted by crystals. However, it has a much more general use, especially in the physics of the solid state. In order to understand what it is, how to construct it and how to make use of it, it is first necessary to start with the so-called real or direct space and then show how reciprocal space is related to it. Real space describes the objects we see around us, especially with regards to crystals, their physical shapes and symmetries and the arrangements of atoms within: the so-called crystal structure. Reciprocal space on the other hand deals with the crystals as seen through their diffraction images. Indeed, crystallographers are accustomed to working backwards from the diffraction images to the crystal structures, which we call crystal structure solution. In solid state physics, one usually works the other way, starting with reciprocal space to explain various solid-state properties, such as thermal and electrical phenomena. In this book, I start with the crystallographer's point of view of real and reciprocal space and then proceed to develop this in a form suitable for physics applications. Note that while for the crystallographer reciprocal space is a handy means of dealing with diffraction, for the solid-state physicist it is thought of as a way to describe the formation and motion of waves, in which case the physicist thinks of reciprocal space in terms of momentum or wave-vector k-space. This is because, for periodic structures, a characteristic of normal crystals, elementary quantum excitations, e.g. phonons and electrons, can be described both as particles and waves. The treatment given here, will be by necessity brief, but I would hope that this will suffice to lead the reader to build upon the concepts described. I have tried to write this book in a suitable form for both undergraduate and graduate students of what today we call "condensed matter physics."



Finding Kluskap

Author : Jennifer Reid

Publisher : Penn State Press

Page : 134 pages

File Size : 35,78 MB

Release : 2015-09-30

Category : Religion

ISBN : 0271062584

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Book Description

The Mi’kmaq of eastern Canada were among the first indigenous North Americans to encounter colonial Europeans. As early as the mid-sixteenth century, they were trading with French fishers, and by the mid-seventeenth century, large numbers of Mi’kmaq had converted to Catholicism. Mi’kmaw Catholicism is perhaps best exemplified by the community’s regard for the figure of Saint Anne, the grandmother of Jesus. Every year for a week, coinciding with the saint’s feast day of July 26, Mi’kmaw peoples from communities throughout Quebec and eastern Canada gather on the small island of Potlotek, off the coast of Nova Scotia. It is, however, far from a conventional Catholic celebration. In fact, it expresses a complex relationship between the Mi’kmaq, Saint Anne, a series of eighteenth-century treaties, and a cultural hero named Kluskap. Finding Kluskap brings together years of historical research and learning among Mi’kmaw peoples on Cape Breton Island, Nova Scotia. The author’s long-term relationship with Mi’kmaw friends and colleagues provides a unique vantage point for scholarship, one shaped not only by personal relationships but also by the cultural, intellectual, and historical situations that inform postcolonial peoples. The picture that emerges when Saint Anne, Kluskap, and the mission are considered in concert with one another is one of the sacred life as a site of adjudication for both the meaning and efficacy of religion—and the impact of modern history on contemporary indigenous religion.



Micro and Nanostructured Composite Materials for Neutron Shielding Applications

Author : Sajith Thottathil Abdulrahman

Publisher : Woodhead Publishing

Page : 452 pages

File Size : 10,5 MB

Release : 2020-06-30

Category : Technology & Engineering

ISBN : 0128194626

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Book Description

Micro- and Nanostructured Composite Materials for Neutron Shielding Applications presents recent developments and future possibilities for neutron shielding materials. Emphasis is placed on the correlation between the morphology, shielding mechanisms, and other desired properties, including their mechanical and thermal properties. The effect of neutron absorbing fillers, including their size on final properties is also examined, as are recent advancements in preparation, characterization and simulation techniques. Written by specialists in their respective fields, this comprehensive resource will help professionals and students understand the fundamentals of neutron shielding, as well as the properties of micro- and nanopolymer-based composites, concrete materials, alloy materials and metal-ceramic composites. - Provides an up-to-date understanding of the fundamentals of shielding mechanisms, morphology and material property correlations - Covers a broad range of micro and nano composite materials for neutron shielding - Discusses recent advances surrounding the synthesis and processing of nanostructures and nanocomposite materials





The Programmer's Brain

Author : Felienne Hermans

Publisher : Simon and Schuster

Page : 254 pages

File Size : 23,6 MB

Release : 2021-10-05

Category : Computers

ISBN : 163835605X

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Book Description

"A great book with deep insights into the bridge between programming and the human mind." - Mike Taylor, CGI Your brain responds in a predictable way when it encounters new or difficult tasks. This unique book teaches you concrete techniques rooted in cognitive science that will improve the way you learn and think about code. In The Programmer’s Brain: What every programmer needs to know about cognition you will learn: Fast and effective ways to master new programming languages Speed reading skills to quickly comprehend new code Techniques to unravel the meaning of complex code Ways to learn new syntax and keep it memorized Writing code that is easy for others to read Picking the right names for your variables Making your codebase more understandable to newcomers Onboarding new developers to your team Learn how to optimize your brain’s natural cognitive processes to read code more easily, write code faster, and pick up new languages in much less time. This book will help you through the confusion you feel when faced with strange and complex code, and explain a codebase in ways that can make a new team member productive in days! Foreword by Jon Skeet. About the technology Take advantage of your brain’s natural processes to be a better programmer. Techniques based in cognitive science make it possible to learn new languages faster, improve productivity, reduce the need for code rewrites, and more. This unique book will help you achieve these gains. About the book The Programmer’s Brain unlocks the way we think about code. It offers scientifically sound techniques that can radically improve the way you master new technology, comprehend code, and memorize syntax. You’ll learn how to benefit from productive struggle and turn confusion into a learning tool. Along the way, you’ll discover how to create study resources as you become an expert at teaching yourself and bringing new colleagues up to speed. What's inside Understand how your brain sees code Speed reading skills to learn code quickly Techniques to unravel complex code Tips for making codebases understandable About the reader For programmers who have experience working in more than one language. About the author Dr. Felienne Hermans is an associate professor at Leiden University in the Netherlands. She has spent the last decade researching programming, how to learn and how to teach it. Table of Contents PART 1 ON READING CODE BETTER 1 Decoding your confusion while coding 2 Speed reading for code 3 How to learn programming syntax quickly 4 How to read complex code PART 2 ON THINKING ABOUT CODE 5 Reaching a deeper understanding of code 6 Getting better at solving programming problems 7 Misconceptions: Bugs in thinking PART 3 ON WRITING BETTER CODE 8 How to get better at naming things 9 Avoiding bad code and cognitive load: Two frameworks 10 Getting better at solving complex problems PART 4 ON COLLABORATING ON CODE 11 The act of writing code 12 Designing and improving larger systems 13 How to onboard new developers



New Philosophical Perspectives on Scientific Progress

Author : Yafeng Shan

Publisher : Taylor & Francis

Page : 425 pages

File Size : 22,24 MB

Release : 2022-11-01

Category : Science

ISBN : 1000780880

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Book Description

This collection of original essays offers a comprehensive examination of scientific progress, which has been a central topic in recent debates in philosophy of science. Traditionally, debates over scientific progress have focused on different methodological approaches, notably the epistemic and semantic approaches. The chapters in Part I of the book examine these two traditional approaches, as well as the newly revived functional and newly developed noetic approaches. Part II features in-depth case studies of scientific progress from the history of science. The chapters cover individual sciences including physics, chemistry, evolutionary biology, seismology, psychology, sociology, economics, and medicine. Finally, Part III of the book explores important issues from contemporary philosophy of science. These chapters address the implications of scientific progress for the scientific realism/anti-realism debate, incommensurability, values in science, idealisation, scientific speculation, interdisciplinarity, and scientific perspectivalism. New Philosophical Perspectives on Scientific Progress will be of interest to researchers and advanced students working on the history and philosophy of science.



Kitchenspace

Author : Maria Elisa Christie

Publisher : University of Texas Press

Page : 337 pages

File Size : 39,81 MB

Release : 2009-08-17

Category : Social Science

ISBN : 0292782608

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Book Description

Throughout the world, the kitchen is the heart of family and community life. Yet, while everyone has a story to tell about their grandmother's kitchen, the myriad activities that go on in this usually female world are often devalued, and little scholarly attention has been paid to this crucial space in which family, gender, and community relations are forged and maintained. To give the kitchen the prominence and respect it merits, Maria Elisa Christie here offers a pioneering ethnography of kitchenspace in three central Mexican communities, Xochimilco, Ocotepec, and Tetecala. Christie coined the term "kitchenspace" to encompass both the inside kitchen area in which everyday meals for the family are made and the larger outside cooking area in which elaborate meals for community fiestas are prepared by many women working together. She explores how both kinds of meal preparation create bonds among family and community members. In particular, she shows how women's work in preparing food for fiestas gives women status in their communities and creates social networks of reciprocal obligation. In a culture rigidly stratified by gender, Christie concludes, kitchenspace gives women a source of power and a place in which to transmit the traditions and beliefs of older generations through quasi-sacramental food rites.



The Shape of Inner Space

Author : Shing-Tung Yau

Publisher : Il Saggiatore

Page : 398 pages

File Size : 18,7 MB

Release : 2010-09-07

Category : Mathematics

ISBN : 0465020232

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Book Description

The leading mind behind the mathematics of string theory discusses how geometry explains the universe we see. Illustrations.



The Soul of Care

Author : Arthur Kleinman

Publisher : Penguin

Page : 274 pages

File Size : 34,40 MB

Release : 2019-09-17

Category : Biography & Autobiography

ISBN : 0525559337

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Book Description

A moving memoir and an extraordinary love story that shows how an expert physician became a family caregiver and learned why care is so central to all our lives and yet is at risk in today's world. When Dr. Arthur Kleinman, an eminent Harvard psychiatrist and social anthropologist, began caring for his wife, Joan, after she was diagnosed with early-onset Alzheimer's disease, he found just how far the act of caregiving extended beyond the boundaries of medicine. In The Soul of Care: The Moral Education of a Husband and a Doctor, Kleinman delivers a deeply humane and inspiring story of his life in medicine and his marriage to Joan, and he describes the practical, emotional and moral aspects of caretaking. He also writes about the problems our society faces as medical technology advances and the cost of health care soars but caring for patients no longer seems important. Caregiving is long, hard, unglamorous work--at moments joyous, more often tedious, sometimes agonizing, but it is always rich in meaning. In the face of our current political indifference and the challenge to the health care system, he emphasizes how we must ask uncomfortable questions of ourselves, and of our doctors. To give care, to be "present" for someone who needs us, and to feel and show kindness are deep emotional and moral experiences, enactments of our core values. The practice of caregiving teaches us what is most important in life, and reveals the very heart of what it is to be human.



A Journey Into Reciprocal Space

Author : A M Glazer

Publisher : Iop Concise Physics

Page : 190 pages

File Size : 24,30 MB

Release : 2017-11-16

Category :

ISBN : 9781643279077

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Book Description

The concept of reciprocal space is over 100 years old, and has been of particular use by crystallographers in order to understand the patterns of spots when x-rays are diffracted by crystals. However, it has a much more general use, especially in the physics of the solid state. In order to understand what it is, how to construct it and how to make use of it, it is first necessary to start with the so-called real or direct space and then show how reciprocal space is related to it. Real space describes the objects we see around us, especially with regards to crystals, their physical shapes and symmetries and the arrangements of atoms within: the so-called crystal structure. Reciprocal space on the other hand deals with the crystals as seen through their diffraction images. Indeed, crystallographers are accustomed to working backwards from the diffraction images to the crystal structures, which we call crystal structure solution. In solid state physics, one usually works the other way, starting with reciprocal space to explain various solid-state properties, such as thermal and electrical phenomena. In this book, I start with the crystallographer's point of view of real and reciprocal space and then proceed to develop this in a form suitable for physics applications. Note that while for the crystallographer reciprocal space is a handy means of dealing with diffraction, for the solid-state physicist it is thought of as a way to describe the formation and motion of waves, in which case the physicist thinks of reciprocal space in terms of momentum or wave-vector k-space. This is because, for periodic structures, a characteristic of normal crystals, elementary quantum excitations, e.g. phonons and electrons, can be described both as particles and waves. The treatment given here, will be by necessity brief, but I would hope that this will suffice to lead the reader to build upon the concepts described. I have tried to write this book in a suitable form for both undergraduate and graduate students of what today we call condensed matter physics.