Browse Results

Showing 75,851 through 75,875 of 84,529 results

The Purposeful Universe: How Quantum Theory and Mayan Cosmology Explain the Origin and Evolution of Life

by Carl Johan Calleman

Identifying the Mayan World Tree with the central axis of the cosmos, the author shows how evolution is not random • Shows how the evolution of the universe emanates from the cosmic Tree of Life • Explains the origin and evolution of biological life and consciousness and how this is directed Using recent findings within cosmology, coupled with his broad understanding of the Mayan Calendar, biologist Carl Johan Calleman offers a revolutionary and fully developed ­alternative to Darwin’s theory of biological evolution--and the theory of randomness that holds sway over modern science. He shows how the recently discovered central axis of the universe correlates with the Tree of Life of the ancients. This provides an entirely new context for physics in general and especially for the origin and evolution of life and suggests that we look upon ourselves as parts of a hierarchy of systems that are all interrelated and evolve in a synchronized way. Calleman’s research demonstrates that life did not just accidentally “pop up” on our planet, but that Earth was a place specifically tagged for this. He demonstrates how the Mayan Calendar describes different quantum states of the Tree of Life and presents a new explanation for the origin and evolution of consciousness. Calleman uses his scientific background in biology and cosmology to show that the idea of the Purposeful Universe is real. He explains not only how DNA but also entire organisms have emerged in the image of the Tree of Life, a theory that has wide-ranging consequences not only for medicine but also for the origin of sacred geometry and the human soul. With this new theory of biological evolution the divide between science and religion disappears.

The Pursuit of Harmony: Kepler on Cosmos, Confession, and Community

by Aviva Rothman

A committed Lutheran excommunicated from his own church, a friend to Catholics and Calvinists alike, a layman who called himself a “priest of God,” a Copernican in a world where Ptolemy still reigned, a man who argued at the same time for the superiority of one truth and the need for many truths to coexist—German astronomer Johannes Kepler was, to say the least, a complicated figure. With The Pursuit of Harmony, Aviva Rothman offers a new view of him and his achievements, one that presents them as a story of Kepler’s attempts to bring different, even opposing ideas and circumstances into harmony. Harmony, Rothman shows, was both the intellectual bedrock for and the primary goal of Kepler’s disparate endeavors. But it was also an elusive goal amid the deteriorating conditions of his world, as the political order crumbled and religious war raged. In the face of that devastation, Kepler’s hopes for his theories changed: whereas he had originally looked for a unifying approach to truth, he began instead to emphasize harmony as the peaceful coexistence of different views, one that could be fueled by the fundamentally nonpartisan discipline of mathematics.

The Pursuit of Parenthood: Reproductive Technology from Test-Tube Babies to Uterus Transplants

by Margaret Marsh Wanda Ronner

A wide-ranging history of assisted reproductive technologies and their ethical implications.Finalist of the PROSE Award for Best Book in History of Science, Medicine and Technology by the Association of American PublishersSince the 1978 birth of the first IVF baby, Louise Brown, in England, more than eight million children have been born with the help of assisted reproductive technologies. From the start, they have stirred controversy and raised profound questions: Should there be limits to the lengths to which people can go to make their idea of family a reality? Who should pay for treatment? How can we ensure the ethical use of these technologies? And what can be done to address the racial and economic disparities in access to care that enable some to have children while others go without?In The Pursuit of Parenthood, historian Margaret Marsh and gynecologist Wanda Ronner seek to answer these challenging questions. Bringing their unique expertise in gender history and women's health to the subject, Marsh and Ronner examine the unprecedented means—liberating for some and deeply unsettling for others—by which families can now be created. Beginning with the early efforts to create embryos outside a woman's body and ending with such new developments as mitochondrial replacement techniques and uterus transplants, the authors assess the impact of contemporary reproductive technology in the United States. In this volume, we meet the scientists and physicians who have developed these technologies and the women and men who have used them. Along the way, the book dispels a number of fertility myths, offers policy recommendations that are intended to bring clarity and judgment to this complicated medical history, and reveals why the United States is still known as the "Wild West" of reproductive medicine.

The Pursuit of Perfect Packing

by Tomaso Aste Denis Weaire

Coauthored by one of the creators of the most efficient space packing solution, the Weaire-Phelan structure, The Pursuit of Perfect Packing, Second Edition explores a problem of importance in physics, mathematics, chemistry, biology, and engineering: the packing of structures. Maintaining its mathematical core, this edition continues and rev

The Pursuit of Perfection: The Promise and Perils of Medical Enhancement

by David Rothman Sheila Rothman

What does it mean to live in a time when medical science can not only cure the human body but also reshape it? How should we as individuals and as a society respond to new drugs and genetic technologies? Sheila and David Rothman address these questions with a singular blend of history and analysis, taking us behind the scenes to explain how scientific research, medical practice, drug company policies, and a quest for peak performance combine to exaggerate potential benefits and minimize risks. They present a fascinating and factual story from the rise of estrogen and testosterone use in the 1920s and 1930s to the frenzy around liposuction and growth hormone to the latest research into the genetics of aging. The Rothmans reveal what happens when physicians view patients' unhappiness and dissatisfaction with their bodies--short stature, thunder thighs, aging--as though they were diseases to be treated. The Pursuit of Perfection takes us from the early days of endocrinology (the belief that you are your hormones) to today's frontier of genetic enhancements (the idea that you are your genes). It lays bare the always complicated and sometimes compromised positions of science, medicine, and commerce. This is the book to read before signing on for the latest medical fix.From the Hardcover edition.

The Pursuit of Power

by William H. McNeill

“Remind[s] us that all humankind has a shared past and, particularly with regard to its choice of weapons and warfare, a shared stake in the future.” —Stuart Rochester, The Washington Post Book WorldIn this magnificent synthesis of military, technological, and social history, William H. McNeill explores a whole millennium of human upheaval and traces the path by which we have arrived at the frightening dilemmas that now confront us. McNeill moves with equal mastery from the crossbow—banned by the Church in 1139 as too lethal for Christians to use against one another—to the nuclear missile, from the sociological consequences of drill in the seventeenth century to the emergence of the military-industrial complex in the twentieth. His central argument is that a commercial transformation of world society in the eleventh century caused military activity to respond increasingly to market forces as well as to the commands of rulers. Only in our own time, suggests McNeill, are command economies replacing the market control of large-scale human effort. The Pursuit of Power does not solve the problems of the present, but its discoveries, hypotheses, and sheer breadth of learning do offer a perspective on our current fears and, as McNeill hopes, “a ground for wiser action.”“Mr. McNeill’s comprehensiveness and sensitivity do for the reader what Henry James said that Turgenev’s conversation did for him: they suggest ‘all sorts of valuable things.’ This narrative of rationality applied to irrational purposes and of ingenuity cannibalizing itself is a work of clarity, which delineates mysteries. The greatest of them, to my mind, is why human beings have never learned to cherish their own species.” —Naomi Bliven, The New Yorker

The Pursuit of Reality: Narrative History of the Quantum and the Great Minds That Made it

by Selçuk Ş. Bayın

In a highly accessible style, this book presents a narrative history of the quantum theory with the new developments that intrigue all inquisitive minds. Quantum theory is counter-intuitive and sometimes downright weird. Even Nobel Laureate physicists like Richard Feynman admit that they do not understand it. Yet, so far, there is not a shred of experimental data that conflicts with its predictions. Its effect on our lives is bound to increase with the quantum information era ushered in by the great Bohr–Einstein debate. Tantalizing applications of quantum information like teleportation, spy-proof communication, super-fast quantum computers, and more are going to influence our lives and change our beliefs about the nature of physical reality. This book takes the reader on an exhilarating journey through the intellectual history of quantum that is turning out to be more surprising every day.

The Puzzle Solver: A Scientist's Desperate Quest to Cure the Illness that Stole His Son

by Tracie White

A Father, His Son, and an Unrelenting Quest for a CureAt the age of twenty-seven, Whitney Dafoe was forced to give up his life as a photographer who traveled the world. Bit by bit a mysterious illness stole away the pieces of his life: First, it took the strength of his legs, then his voice, and his ability to eat. Finally, even the sound of a footstep in his room became unbearable. The Puzzle Solver follows several years in which he desperately sought answers from specialist after specialist, where at one point his 6'3" frame dropped to 115 lbs. For years, he underwent endless medical tests, but doctors told him there was nothing wrong. Then, finally, a diagnosis: Chronic Fatigue Syndrome, also known as myalgic encephalomyelitis.In the 80s, when an outbreak of people immobilized by an indescribable fatigue were reported near Lake Tahoe, Nevada, doctors were at a loss to explain the symptoms. The condition would alternatively be nicknamed Raggedy Ann Syndrome or the Yuppie Disease, and there was no cure or answers about treatment. They were to remain sick.But there was one answer: Whitney's father, Ron Davis, PhD, a world-class geneticist at Stanford University whose legendary research helped crack the code of DNA, suddenly changed the course of his career in a race against time to cure his son's debilitating condition.In The Puzzle Solver, journalist Tracie White, who first wrote a viral and award-winning piece on Davis and his family in Stanford Medicine, tells his story. In gripping prose, she masterfully takes readers along on this journey with Davis to solve one of the greatest mysteries in medicine. In a piercing investigative narrative, closed doors are opened, and masked truths are exposed as Davis uncovers new proof confirming that Chronic Fatigue Syndrome is a biological disease.At the heart of this book is a moving story that goes far beyond medicine, this is a story about how the power of love -- and science -- can shine light in even the darkest, most hidden, corners of the world.

The Puzzle of Pangaea

by Meg Moss

Deep underground, unseen forces are at play to move the continents around our globe.

The Puzzle of Perceptual Justification: Conscious experience, Higher-order Beliefs, and Reliable Processes (Synthese Library #377)

by Harmen Ghijsen

This book provides an accessible and up-to-date discussion of contemporary theories of perceptual justification that each highlight different factors related to perception, i.e., conscious experience, higher-order beliefs, and reliable processes. The book’s discussion starts from the viewpoint that perception is not only one of our fundamental sources of knowledge and justification, but also plays this role for many less sophisticated animals. It proposes a scientifically informed reliabilist theory which can accommodate this fact without denying that some of our epistemic abilities as human perceivers are special. This allows it to combine many of our intuitions about the importance of conscious experience and higher-order belief with the controversial thesis that perceptual justification is fundamentally non-evidential in character.

The Pyrocene: How We Created an Age of Fire, and What Happens Next

by Stephen J. Pyne

A dramatic reorientation of humanity’s relationship with fireThe Pyrocene tells the story of what happened when a fire-wielding species, humanity, met an especially fire-receptive time in Earth's history. Since terrestrial life first appeared, flames have flourished. Over the past two million years, however, one genus gained the ability to manipulate fire, swiftly remaking both itself and eventually the world. We developed small guts and big heads by cooking food; we climbed the food chain by cooking landscapes; and now we have become a geologic force by cooking the planet. Some fire uses have been direct: fire applied to convert living landscapes into hunting grounds, forage fields, farms, and pastures. Others have been indirect, through pyrotechnologies that expanded humanity's reach beyond flame's grasp. Still, preindustrial and Indigenous societies largely operated within broad ecological constraints that determined how, and when, living landscapes could be burned. These ancient relationships between humans and fire broke down when people began to burn fossil biomass—lithic landscapes—and humanity’s firepower became unbounded. Fire-catalyzed climate change globalized the impacts into a new geologic epoch. The Pleistocene yielded to the Pyrocene. Around fires, across millennia, we have told stories that explained the world and negotiated our place within it. The Pyrocene continues that tradition, describing how we have remade the Earth and how we might recover our responsibilities as keepers of the planetary flame.

The Quadratic Unconstrained Binary Optimization Problem: Theory, Algorithms, and Applications

by Abraham P. Punnen

The quadratic binary optimization problem (QUBO) is a versatile combinatorial optimization model with a variety of applications and rich theoretical properties. Application areas of the model include finance, cluster analysis, traffic management, machine scheduling, VLSI physical design, physics, quantum computing, engineering, and medicine. In addition, various mathematical optimization models can be reformulated as a QUBO, including the resource constrained assignment problem, set partitioning problem, maximum cut problem, quadratic assignment problem, the bipartite unconstrained binary optimization problem, among others.This book presents a systematic development of theory, algorithms, and applications of QUBO. It offers a comprehensive treatment of QUBO from various viewpoints, including a historical introduction along with an in-depth discussion of applications modelling, complexity and polynomially solvable special cases, exact and heuristic algorithms, analysis of approximation algorithms, metaheuristics, polyhedral structure, probabilistic analysis, persistencies, and related topics. Available software for solving QUBO is also introduced, including public domain, commercial, as well as quantum computing based codes.

The Quality System: A Sourcebook for Managers and Engineers, Second Edition

by Frank Caplan

In its second edition, the purpose of this handbook is to assist remediation site managers and their operating contractors in ensuring that each remediation system is effectively making progress toward site cleanup objectives and remains protective of human health and the environment.

The Quality of Measurements

by Paul Makinen A. E. Fridman Andrew Sabak

This monograph and translation from the Russian describes in detail and comments on the fundamentals of metrology. The basic concepts of metrology, the principles of the International System of Units SI, the theory of measurement uncertainty, the new methodology of estimation of measurement accuracy on the basis of the uncertainty concept, as well as the methods for processing measurement results and estimating their uncertainty are discussed from the modern position. It is shown that the uncertainty concept is compatible with the classical theory of accuracy. The theory of random uncertainties is supplemented with their most general description on the basis of generalized normal distribution; the instrumental systematic errors are presented in connection with the methodology of normalization of the metrological characteristics of measuring instruments. The information about modern systems of traceability is given. All discussed theoretical principles and calculation methods are illustrated with examples.

The Quality of the Archaeological Record

by Charles Perreault

Paleobiology struggled for decades to influence our understanding of evolution and the history of life because it was stymied by a focus on microevolution and an incredibly patchy fossil record. But in the 1970s, the field took a radical turn, as paleobiologists began to investigate processes that could only be recognized in the fossil record across larger scales of time and space. That turn led to a new wave of macroevolutionary investigations, novel insights into the evolution of species, and a growing prominence for the field among the biological sciences. In The Quality of the Archaeological Record, Charles Perreault shows that archaeology not only faces a parallel problem, but may also find a model in the rise of paleobiology for a shift in the science and theory of the field. To get there, he proposes a more macroscale approach to making sense of the archaeological record, an approach that reveals patterns and processes not visible within the span of a human lifetime, but rather across an observation window thousands of years long and thousands of kilometers wide. Just as with the fossil record, the archaeological record has the scope necessary to detect macroscale cultural phenomena because it can provide samples that are large enough to cancel out the noise generated by micro-scale events. By recalibrating their research to the quality of the archaeological record and developing a true macroarchaeology program, Perreault argues, archaeologists can finally unleash the full contributive value of their discipline.

The Quantification of Life and Health from the Sixteenth to the Nineteenth Century: Intersections of Medicine and Philosophy (Palgrave Studies in Medieval and Early Modern Medicine)

by Joaquim Braga Simone Guidi

This edited volume explores the intersection of medicine and philosophy throughout history, calling attention to the role of quantification in understanding the medical body. Retracing current trends and debates to examine the quantification of the body throughout the early modern, modern and early contemporary age, the authors contextualise important issues of both medical and philosophical significance, with chapters focusing on the quantification of temperaments and fluids, complexions, functions of the living body, embryology, and the impact of quantified reasoning on the concepts of health and illness. With insights spanning from the sixteenth century to the nineteenth century, this book provides a wide-ranging overview of attempts to ‘quantify’ the human body at various points. Arguing that medicine and philosophy have been constantly in dialogue with each other, the authors discuss how this provided a strategic opportunity both for medical thought and philosophy to refine and further develop. Given today’s fascination with the quantification of the body, represented by the growing profusion of self-tracking devices logging one’s sleep, diet or mood, this collection offers an important and timely contribution to an emerging and interdisciplinary field of study.

The Quantified Process Approach to Neuropsychological Assessment (Studies on Neuropsychology, Neurology and Cognition)

by Amir M. Poreh

Since the late 1800s psychologists have been interested in discerning the strategies subjects employ to solve psychological tests (Piaget, 1928, Werner, 1940, Gesell, 1941). Much of this work, however, has relied on qualitative observations. In the 1970s, Edith Kaplan adopted this approach to the analysis of standardized neuropsychological measures. Unlike her predecessors, Dr. Kaplan and her colleagues emphasized the application of modern behavioral neurology to the analysis of the test data. Her approach was later termed the Boston Process Approach to neuropsychological assessment. While Edith Kaplan's work generates a great deal of enthusiasm, the qualitative nature of her analyses did not allow for its adoption by mainstream neuropsychologists. However, in recent years this limitation has begun to be addressed. Clinicians and researchers have developed new methodologies for quantifying the Boston Process Approach, leading to the emergence of a new field, which is collectively termed the Quantified Process Approach. Quantified Process Approach to Neuropsychological Assessment outlines the rationale for the emergence of this new approach and reviews the state of the art research literature and up to date clinical applications as they pertain to the evaluation of neuropsychiatric, head injured, and learning disabled patients. When available, norms and scoring forms are included in the appendices.

The Quantization of Gravity (Fundamental Theories of Physics #194)

by Claus Gerhardt

​A unified quantum theory incorporating the four fundamental forces of nature is one of the major open problems in physics. The Standard Model combines electro-magnetism, the strong force and the weak force, but ignores gravity. The quantization of gravity is therefore a necessary first step to achieve a unified quantum theory. In this monograph a canonical quantization of gravity has been achieved by quantizing a geometric evolution equation resulting in a gravitational wave equation in a globally hyperbolic spacetime. Applying the technique of separation of variables we obtain eigenvalue problems for temporal and spatial self-adjoint operators where the temporal operator has a pure point spectrum with eigenvalues $\lambda_i$ and related eigenfunctions, while, for the spatial operator, it is possible to find corresponding eigendistributions for each of the eigenvalues $\lambda_i$, if the Cauchy hypersurface is asymptotically Euclidean or if the quantized spacetime is a black hole with a negative cosmological constant. The hyperbolic equation then has a sequence of smooth solutions which are products of temporal eigenfunctions and spatial eigendistributions. Due to this "spectral resolution" of the wave equation quantum statistics can also be applied to the quantized systems. These quantum statistical results could help to explain the nature of dark matter and dark energy.

The Quantization of Gravity (Fundamental Theories of Physics #194)

by Claus Gerhardt

A unified quantum theory incorporating the four fundamental forces of nature is one of the major open problems in physics. The Standard Model combines electro-magnetism, the strong force and the weak force, but ignores gravity. The quantization of gravity is therefore a necessary first step to achieve a unified quantum theory. In this monograph a canonical quantization of gravity has been achieved by quantizing a geometric evolution equation resulting in a hyperbolic equation in a fiber bundle, where the base space represents a Cauchy hypersurface of the quantized spacetime and the fibers the Riemannian metrics in the base space. The hyperbolic operator, a second order partial differential operator, acts both in the fibers as well as in the base space. In this second edition new results are presented which allow the solutions of the hyperbolic equation to be expressed as products of spatial and temporal eigenfunctions of self-adjoint operators. These eigenfunctions form complete bases in appropriate Hilbert spaces. The eigenfunctions depending on the fiber elements are a subset of the Fourier kernel of the symmetric space SL(n,R)/SO(n), where n is the dimension of the base space; they represent the elementary gravitons corresponding to the degrees of freedom in choosing the entries of Riemannian metrics with determinants equal to one. These are all the degrees of freedom available because of the coordinate system invariance: For any smooth Riemannian metric there exists an atlas such that in each chart the determinant of the metric is equal to one. In the important case n=3 the Standard Model could also be incorporated such that one can speak of a unified quantization of all four fundamental forces of nature.

The Quantum Dice

by L.I Ponomarev I.V Kurchatov

"Real black magic calculus" is how Albert Einstein described quantum mechanics in a letter in 1925. Quantum mechanics is now rather more widely understood by physicists, but still many "outsiders" are unaware of what quantum mechanics is, how it has changed the course of development of physics and how it affects their everyday lives. This book gives a fascinating account of the evolution of the ideas and concepts of quantum theory and modern physics, written by an "insider" but aimed specifically at the general science reader. Many anecdotes from famous past physicists give an insight into their work and personalities. The many illustrations are an important and attractive feature of the book. Leonid Ponomarev is a leading theoretical physicist. His deep understanding of the subject is allied with his wide knowledge of history, literature and philosophy to produce this history of the development of modern physics and its impact on our lives.

The Quantum Dissidents

by Olival Freire Junior

This book tells the fascinating story of the people and events behind the turbulent changes in attitudes to quantum theory in the second half of the 20th century. The huge success of quantum mechanics as a predictive theory has been accompanied, from the very beginning, by doubts and controversy about its foundations and interpretation. This book looks in detail at how research on foundations evolved after WWII, when it was revived, until the mid 1990s, when most of this research merged into the technological promise of quantum information. It is the story of the quantum dissidents, the scientists who brought this subject from the margins of physics into its mainstream. It is also a history of concepts, experiments, and techniques, and of the relationships between physics and the world at large, touching on themes such as the Cold War, McCarthyism, Zhdanovism, and the unrest of the late 1960s.

The Quantum Enigma: Finding the Hidden Key

by Wolfgang Smith

Following the overthrow of the classical world picture by the findings of quantum mechanics, physicists have proposed a broad gamut of alternative world views. This book begins with the major recognition that each of these suffers from a certain 'residual Cartesianism' that has been smuggled in unconsciously. It turns out that the moment one discards this hidden and problematic premise, quantum theory begins to 'make sense' in a way that it never has before. As the author shows, it is now possible, for the first time, to integrate the findings of quantum physics into a world view that is neither forced nor ad hoc, but conforms to the permanent intuitions of mankind. Surprisingly, this treatise can be read not only by scientists, but also by readers unacquainted with the technical conceptions of physics or the quantum-reality literature.

The Quantum Frontier: The Large Hadron Collider

by Don Lincoln

The highest-energy particle accelerator ever built, the Large Hadron Collider runs under the border between France and Switzerland. It leapt into action on September 10, 2008, amid unprecedented global press coverage and widespread fears that its energy would create tiny black holes that could destroy the earth. By smashing together particles smaller than atoms, the LHC recreates the conditions hypothesized to have existed just moments after the big bang. Physicists expect it to aid our understanding of how the universe came into being and to show us much about the standard model of particle physics—even possibly proving the existence of the mysterious Higgs boson. In exploring what the collider does and what it might find, Don Lincoln explains what the LHC is likely to teach us about particle physics, including uncovering the nature of dark matter, finding micro black holes and supersymmetric particles, identifying extra dimensions, and revealing the origin of mass in the universe.Thousands of physicists from around the globe will have access to the LHC, none of whom really knows what outcomes will be produced by the $7.7 billion project. Whatever it reveals, the results arising from the Large Hadron Collider will profoundly alter our understanding of the cosmos and the atom and stimulate amateur and professional scientists for years to come.

The Quantum Handshake

by John G. Cramer

This book shines bright light into the dim recesses of quantum theory, where the mysteries of entanglement, nonlocality, and wave collapse have motivated some to conjure up multiple universes, and others to adopt a "shut up and calculate" mentality. After an extensive and accessible introduction to quantum mechanics and its history, the author turns attention to his transactional model. Using a quantum handshake between normal and time-reversed waves, this model provides a clear visual picture explaining the baffling experimental results that flow daily from the quantum physics laboratories of the world. To demonstrate its powerful simplicity, the transactional model is applied to a collection of counter-intuitive experiments and conceptual problems.

The Quantum Internet: Ultrafast and Safe from Hackers

by Gösta Fürnkranz

The internet can look forward to a fantastic future! With new quantum technology, hacker-proof exchange of information and ultrafast data processing will become possible. The basis for these is Albert Einstein's "quantum spook". We are not dealing here with sorcery, but with hard-core science. This book undertakes a fascinating journey through the world of our quantum future - from the first "quantum satellite" to high-security internet, the quantum cloud and beyond, to partly futuristic applications. The author guides the reader through the basic ideas of quantum physics, explains the concepts of quantum computers, quantum cryptography, and quantum teleportation, and then establishes their relationship to the quantum Internet. Special attention is paid not only to the technical challenges involved, but also to the likely effects on society. Alongside examples of implementation, the author intersperses delightful anecdotes, which bring the story to life. With this book you will learn how quantum physics can revolutionize the internet! "... in lively prose the author presents the current state of research in its whole breadth and splendour – valuable and entertaining reading!” Rupert Ursin, Group Leader and Vice Director of the Institute for Quantum Optics and Quantum Information, Vienna

Refine Search

Showing 75,851 through 75,875 of 84,529 results