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Paperback. Condición: New. 1996 ed. For over twenty-five years, Sidney Harris has been recognized as the leading cartoonist specializing in the world of modern science and technology. Whether he is poking gentle fun at Einstein or theoretical mathematicians, his drawings are entertaining, clever, and always right on target for his chosen subjects. …

Paperback. Condición: New. Sixth Edition 2011. Procedures to Investigate Foodborne Illness is designed to guide public health personnel or teams in any country that investigates reports of alleged foodborne illnesses. The  manual is based on epidemiologic principles and investigative techniques that have been found effective in determining causal factors of disease incidence. The guidelines are presented in the sequence usually followed during investigations and are organized so that an investigator can easily find the information needed in any phase of an investigation. Included are descriptions of the following procedures:Plan, prepare, investigate and respond to intentional contamination of foodHandle illness alerts and food-related complaints that may be related to illnessInterview ill persons, those at risk, and controlsDevelop a case definitionCollect and ship specimens and food samplesConduct hazard analysis (environmental assessments) at sites where foods responsible for outbreaks were produced, processed, or preparedTrace sources of contaminationIdentify factors responsible for contamination, survival of pathogenic microorganisms or toxic substances, and/or propagation of pathogensCollate and interpret collected dataReport information about the outbreakThis edition also contains extensively updated and more user-friendly keys to assist investigators in identifying the contributing factors that may lead to the contamination, proliferation or survival of agents of foodborne disease.…

Paperback. Condición: New. Sixth Edition 2011. Procedures to Investigate Foodborne Illness is designed to guide public health personnel or teams in any country that investigates reports of alleged foodborne illnesses. The  manual is based on epidemiologic principles and investigative techniques that have been found effective in determining causal factors of disease incidence. The guidelines are presented in the sequence usually followed during investigations and are organized so that an investigator can easily find the information needed in any phase of an investigation. Included are descriptions of the following procedures:Plan, prepare, investigate and respond to intentional contamination of foodHandle illness alerts and food-related complaints that may be related to illnessInterview ill persons, those at risk, and controlsDevelop a case definitionCollect and ship specimens and food samplesConduct hazard analysis (environmental assessments) at sites where foods responsible for outbreaks were produced, processed, or preparedTrace sources of contaminationIdentify factors responsible for contamination, survival of pathogenic microorganisms or toxic substances, and/or propagation of pathogensCollate and interpret collected dataReport information about the outbreakThis edition also contains extensively updated and more user-friendly keys to assist investigators in identifying the contributing factors that may lead to the contamination, proliferation or survival of agents of foodborne disease.…

Softcover. Condición: leichte Gebrauchsspuren. mak. Bibl. / library Solvable Differential Equations.- Second-Order Differential Equations.- Preliminaries to Series Solutions.- Solution at an Ordinary Point.- Solution at a Singular Point.- Solution at a Singular Point (Cont?d.).- Legendre Polynomials and Functions.- Chebyshev, Hermite and Laguerre Polynomials.- Bessel Functions.- Hypergeometric Functions.- Piecewise Continuous and Periodic Functions.- Orthogonal Functions and Polynomials.- Orthogonal Functions and Polynomials (Cont?d.).- Boundary Value Problems.- Boundary Value Problems (Cont?d.).- Green?s Functions.- Regular Perturbations.- Singular Perturbations.- Sturm?Liouville Problems.- Eigenfunction Expansions.- Eigenfunction Expansions (Cont?d.).- Convergence of the Fourier Series.- Convergence of the Fourier Series (Cont?d.).- Fourier Series Solutions of Ordinary Differential Equations.- Partial Differential Equations.- First-Order Partial Differential Equations.- Solvable Partial Differential Equations.- The Canonical Forms.- The Method of Separation of Variables.- The One-Dimensional Heat Equation.- The One-Dimensional Heat Equation (Cont?d.).- The One-Dimensional Wave Equation.- The One-Dimensional Wave Equation (Cont?d.).- Laplace Equation in Two Dimensions.- Laplace Equation in Polar Coordinates.- Two-Dimensional Heat Equation.- Two-Dimensional Wave Equation.- Laplace Equation in Three Dimensions.- Laplace Equation in Three Dimensions (Cont?d.).- Nonhomogeneous Equations.- Fourier Integral and Transforms.- Fourier Integral and Transforms (Cont?d.).- Fourier Transform Method for Partial DEs.- Fourier Transform Method for Partial DEs (Cont?d.).- Laplace Transforms.- Laplace Transforms (Cont?d.).- Laplace Transform Method for Ordinary DEs.- Laplace Transform Method for Partial DEs.- Well-PosedProblems.- Verification of Solutions. In englischer Sprache. 410 Seiten Hauptinhalt, 14 Seiten vor dem Hauptinhalt pages. 235 mm × 155 mm.…

Paperback. Condición: New. 1996 ed. For over twenty-five years, Sidney Harris has been recognized as the leading cartoonist specializing in the world of modern science and technology. Whether he is poking gentle fun at Einstein or theoretical mathematicians, his drawings are entertaining, clever, and always right on target for his chosen subjects. …

Paperback. Condición: New. For the interested lay reader, a brief, literate look at the forces that make the surface of the Earth subject to earthquakes and volcanoes. Softcover reprint of the original 1st ed. 2002.

Paperback. Condición: New. 1st ed. 2022. How does homebanking work? How are board games developed? How reliable can wind energy get? How do we discover forged paintings? Do smart girls stay single? How dangerous can a bioterrorist get? In all these questions (and many others), mathematics plays a crucial role in the search for an answer.?This book tells the story behind twenty of these questions. This is explicitly not a mathematics book, but a book about the crucial role that mathematics plays in devising the creative solutions the world needs. The questions are divided into three categories: mathematics in everyday life, mathematics for the workplace, and mathematics for tomorrow's society. The themes illustrate not only the incredibly broad applicability of mathematics in the world around us, but also the great diversity of useful mathematical techniques.…

Paperback. Condición: New. This is the first book ever for non-native speakers on how to conduct technical demos and training sessions. You will also learn how to present your company, and explain your products and services. The book is designed to help both those who have never done presentations before, as well as those whose English is already good but who want to improve their presentation skills.The focus is on language, rather than on the creation of slides from a technical/artistic point of view. This book will help you to:prepare and practice a well organized, interesting and memorable presentationgive effective demos and training sessions either on site or via audio/video conferencehighlight the essential points you want the audience to rememberavoid problems in English by using short easy-to-say sentencesinvolve your audience, check their understanding, and deal with their questionsimprove your pronunciationovercome problems with nerves and embarrassmentmotivate your audience to listen and act on what you have saidThere is an introduction for trainers on how to teach presentations and demos within a Business English course.…

Paperback. Condición: New. 1st ed. 1991. Corr. 2nd printing 1992. Intended for use in college courses for prospective or in-service secondary school teachers of geometry. Designed to give teachers broad preparation in the content of elementary geometry as well as closely related topics of a slightly more advanced nature. The presentation and the modular format are designed to incorporate a flexible methodology for the teaching of geometry, one that can be adapted to different classroom settings. The basic strategy is to develop the few fundamental concepts of elementary geometry, first in intuitive form, and then more rigorously. The rest of the material is then built up out of these concepts through a combination of exposition and "guided discovery" in the problem sections. A separate volume including the solutions to the exercises is also available.…

Paperback. Condición: New. A brief look at a complex and intriguing topic, this book takes a look at bees from a variety of perspectives, from the physiology of individual bees of different species to analysis of their complex behaviors and social interactions. Softcover reprint of the original 1st ed. 2002.…

Paperback. Condición: New. This book sets forth a set of truly controversial and astonishing theories: First, it proposes that below the surface of the earth is a biosphere of greater mass and volume than the biosphere the total sum of living things on our planet's continents and in its oceans. Second, it proposes that the inhabitants of this subterranean biosphere are not plants or animals as we know them, but heat-loving bacteria that survive on a diet consisting solely of hydrocarbons that is, natural gas and petroleum. And third and perhaps most heretically, the book advances the stunning idea that most hydrocarbons on Earth are not the byproduct of biological debris ("fossil fuels"), but were a common constituent of the materials from which the earth itself was formed some 4.5 billion years ago.The implications are astounding. The theory proposes answers to often-asked questions: Is the deep hot biosphere where life originated, and do Mars and other seemingly barren planets contain deep biospheres? Evenmore provocatively, is it possible that there is an enormous store of hydrocarbons upwelling from deep within the earth that can provide us with abundant supplies of gas and petroleum?However far-fetched these ideas seem, they are supported by a growing body of evidence, and by the indisputable stature and seriousness Gold brings to any scientific debate. In this book we see a brilliant and boldly original thinker, increasingly a rarity in modern science, as he develops potentially revolutionary ideas about how our world works. Softcover reprint of the original 1st ed. 1999. …

Paperback. Condición: New. chapter 1 Time in the Classical and Medieval Worldviews From the Beginnings to the Pre-Socratic School Zeno's Time Arrow and Aristotle's Continuum 6 Time and Creation According to Saint Augustine 15 Time and Medieval Astronomy 18 20 Calendars and Clocks chapter 2 Time in the Worldview of Classical Physics 25 Absolute Time According to Newton 26 Relational Time According to Leibniz 30 Time in Classical Mechanics 31 Time in Kant's Epistemology 35 chapter 3 Relativistic Spacetime 43 Time in Special Relativity Theory 44 Time in General Relativity Theory 50 Time in Relativistic Cosmology 54 chapter 4 Time and the Quantum World 61 Time in Quantum Mechanics 62 Time in Quantum Field Theories 70 Time, Black Holes, and the Anthropic Principle 78 Time and Thermodynamics chapter 5 83 Time in Equilibrium Thermodynamics 84 Time in Nonequilibrium Thermodynamics 2 9 Time, Irreversibility, and Self-Organization 100 chapter 6 Time and Life 107 Time in Darwin's Theory of Evolution 108 Time in Molecular Evolution 111 Time Hierarchies and Biological Rhythms 117 chapter 7 Time and Consciousness 121 Temporal Rhythms and Brain Physiology 122 The Experience of Time and the Emergence of Consciousness 124 Computation Time and Artificial Intelligence 128 chapter 8 Time in History and Culture 137 Time in Historical Cultures 138 Time in Technological-Industrial Cultures 144 The Time Horizon of the Technological World and the Philosophy of Time 152 Further Reading 161 Index 167 Acknowledgments The Little Book of Time was inspired by my research in Softcover reprint of hardcover 1st ed. 2002.…

Paperback. Condición: New. 2012 ed. Becoming a Food Scientist is designed as a reservoir of ideas for those beginning a graduate education in food science or beginning a professional career in the field. Although at times it may read as a how-to manual for success in graduate school, it is meant to encourage each reader to study the research process, to challenge conventional wisdom, and to develop a career path that maximizes the probability of success both in school and beyond. The author has viewed food science graduate programs through the lenses of programs at four universities and service in numerous activities with the Institute of Food Technologists. This book is thus focused on the field of food science, but it may have relevance to other scientific disciplines.  The book introduces the concept of research as process in the first chapter. Subsequent chapters focus on individual unit operations of research: idea generation, problem definition, critical evaluation of the literature, method selection, experimental design, data collection, processing and analysis, and knowledge dissemination. Successful graduate students in food science must master each of these operations. The final section of the book pushes the reader beyond graduate school into its practice in the real world. Topics covered in the maturation of a food scientist include the scientific meeting, critical thinking, science and philosophy, ethics, finding and managing the literature, planning, grantsmanship, laboratory setup and management, and career development. This book should be a meaningful companion for any graduate student in the field and those transitioning from graduate school to the food science profession.…

Paperback. Condición: New. Are you a graduate, postgraduate or PhD student? Are you simply looking for a new job in the private or public sector, in research or industry? If your aim is to produce a professional CV or resume, then this book is for you. Based on interviews with recruiters and HR managers, and an analysis of hundreds of CVs from around 40 different countries, the book is structured as a series of FAQs.Topics covered include:how recruiters and HR people analyse a CVwhether using a template is a good ideathe difference between a CV and a resumehow to present your personal details and whether to include a photohow to write an Executive Summarywhat to write in each section (Education, Work Experience, Skills, Personal Interests)how to write dateshow to highlight your language, communication and team skillshow to get and write referencesYou will also learn some hints and strategies for writing a:cover letterLinkedIn profilereference letterbioThe last chapter of the book contains a simple template to help you get the job of your dreams.…

Paperback. Condición: New. Acknowledgments chapter 1 The Roots of Earth Sciences 1 Classical Scientific Thought 1 The Copernican Revolution 2 From Physics and Philosophy to Geology 4 The Age of the Earth 6 chapter 2 The Earth in the Context of Our Solar System 9 The Origins of the Solar System The Elements of the Solar System The Planets Circling the Sun chapter 3 The Formation of Earth and Moon 21 Similarities and Differences 21 Exploring the Moon chapter 4 The Interior of the Earth and the Role of Seismology Seismic Waves 28 The Earth's Interior 36 chapter 5 Rotation and Shape, Gravity and Tides 41 Describing the Earth's Shape Tides 44 Rotation 44 43 27 23 15 12 10 xiii xi chapter 6 The Earth's Magnetic Field 47 Establishing a Physical Concept Reversals of the Magnetic Field 51 Paleomagnetism chapter 7 Atom-Mineral-Rock 59 Crystallization 60 Minerals in Crust and Mantle 60 Rocks chapter 8 The Early Ages 71 The Archean 71 The Proterozoic 77 chapter 9 Radioactive Dating The Chemistry of Unstable Elements Determining the Age Applications of Radioactive Dating Techniques Carbon Dating 90 chapter10 Plate Tectonics Twentieth-Century Research Gathering Evidence 95 Drifting Plates 3 Pangea and Beyond 4 chapter11 The Crust of the Earth 7 The Moho 7 The Crust Hydrocarbons 4 Coal 9 Other Subsurface-based Resources 9 12 12 12 108 10 10 10 10 94 93 89 83 81 81 63 52 48 chapter12 Formation of Mountains and Basins Collisions Orogeny Sediment Basins Softcover reprint of hardcover 1st ed. 2002.…

Paperback. Condición: New. Here is a concise, understandable guide for everyone who has long wondered what the cosmologists are talking about. Succinctly and simply, Craig Hogan explains what happened in the Big Bang (and how we know), why we think the universe is expanding, and what its fate may be. He explains such terms as "cosmic inflation", "cosmic background radiation," and "dark matter" and shows why they're important. Everyone who is mystified by news stories about the universe (and reports that "the Big Bang theory is in trouble") can get a quick, painless grounding in the basics from this entertaining little book. Softcover reprint of the original 1st ed. 1998.…

Paperback. Condición: New. 2012. Sigmund Freud meets Peter Drucker . Behind the Executive Door is a revealing look at the behavior of top business leaders-and how the next level of aspiring managers can learn to navigate the political and personal landscape. Based on over 25 years of psychotherapy and consulting experiences, as well as extensive empirical research, Karol Wasylyshyn has identified a dynamic continuum of executive behaviors that are manifested in three specific types of business leaders - Remarkable, Perilous, and Toxic. She describes these types in accessible terms with the intertwined goals of helping readers (1) recognize these behaviors and leadership types and (2) leverage this information to increase their savvy and effectiveness in the workplace. In the wake of Sarbanes-Oxley and the increased scrutiny of business executives, we have learned that how they lead is often their undoing - or at least it is a pressing development need and/or potential derailment factor. In short, despite financial or strategic smarts, ineffective leadership behavior de-motivates talented employees, has adverse effects on productivity, and jeopardizes positive business results. Conversely, we can recognize the qualities of effective leadership behavior, which is largely a function of emotional intelligence, the ability to tap into the needs and motivations of others and bring out their best performance.In Behind the Executive Door, the author provides a wide variety of tools and exercises to help the reader identify the behavior traits of their organizations' leaders -and hone their own approaches to achieve positive results. In the process, readers will also gain insights and skills to manage laterally and down, as well as up the organizational ladder. The concepts can be applied in any type of organization - private or public, for-profit or non-profit. The result is not only a better understanding of organizational politics and leadership behavior, but a practical guideto making important career decisions, such as whom to work for and how to develop one's own leadership style.…

Paperback. Condición: New. If you are a non-native English speaker and make telephone calls as part of your work, then this book is for you. By applying the suggested guidelines, you will stand a much greater chance of making an effective telephone call. You will learn how to:prepare for a call both psychologically and from an English language point of viewreceive calls (if you work on reception)leave messagesfind out about another company and talk about your own companychase people (i.e. people who have not followed up your requests)deal with difficult calls and callers, and improve your telephone manneruse the telephone while working on a help desk or helplineresolve language difficulties (i.e. when you cannot understand the other person's English)improve your pronunciationuse resources on the Internet to improve your listening skillsThe book concludes with a chapter of useful phrases. There is a brief introduction for trainers on how to teach telephone and helpdesk skills within a Business English course.…

Paperback. Condición: New. How can we reconcile Shakespeare's account of human behavior and that of modern brain science? That's the central question addressed by the noted Glasgow chemist and writer A.G. Cairns-Smith in this brief, witty, provocative, and highly accessible discussion of conscious awareness, free will, science, and the likely central role of quantum energy in understanding the mind. Secrets of the Mind is not only a splendid discussion of the central questions of consciousness and brain science, but a contribution to answering some of them. Softcover reprint of the original 1st ed. 1999.…

Paperback. Condición: New. From the editors of the wildly successful Beyond Calculation comes another exploration of the overwhelming impact of computers on our future. This time, the essays focus on the human impact of computer technology and culture: how computers will affect the ways we teach, learn, communicate, relate to each other, and live in the coming decades. The contributors, representing the best of many fields, include Secretary of Defense William Perry on how computers will affect warfare; Brian Ferrin on technology and storytelling; Patti Maes on intelligent agents; Nobel Laureate Murray Gell-Mann on the quality of information; Eliot Soloway on the impact of computers on education; and many more. Like Beyond Calculation, praised by the New York Times for its "astonishing intellectual reach," this sequel engages readers with some of the most compelling and important issues of our time. Softcover reprint of the original 1st ed. 1999. …

Paperback. Condición: New. In a series of short, wonderfully imaginative chapters, A.K. Dewdney introduces us to the vast and intricate web that is Hungry Hollow, a seemingly ordinary stretch of river somewhere east of the Rocky Mountains. We encounter a hackberry tree that perfectly reproduces the taxonomic Tree of Life, learn how it would look and feel to shrink by stages to the size of an amoeba while swimming in a river, watch a toad win the lottery, and see the world of Hungry Hollow from the viewpoint of bears, earthworms and even stones. This is a natural history book like no other. Softcover reprint of the original 1st ed. 1998.…

Paperback. Condición: New. 2010 ed. Not Invited to the Party demonstrates how the dominant political parties--the Democrats and Republicans--have co-opted the system to their advantage. James Bennett examines the history and array of laws, regulations, subsidies and programs that benefit the two major parties and discourage even the possibility of a serious challenge to the Democrat-Republican duopoly. The American Founders, as it has been generally forgotten, distrusted political parties. Nowhere in the U.S. Constitution are parties mentioned, much less given legal protection or privilege. This provocative book traces how by the end of the Civil War the Republicans and Democrats had guaranteed their dominance and subsequently influenced a range of policies developed to protect the duopoly. For example, Bennett examines how the Federal Election Campaign Act of 1971 (as amended in 1974 and 1976), which was sold to the public as a nonpartisan act of good government reformism actually reinforced the dominance of the two parties. While focused primarily on the American experience, the book also considers the prevalence of two-party systems around the world (especially in emerging democracies) and the widespread contempt with which they are often viewed. Featuring incisive commentary on the 2008 election, and a foreword by third-party iconoclast, Ralph Nader, the book considers the potential of truly radical reform toward opening the field to vigorous, lively, contentious independent candidacies that might finally offer alienated voters a choice, not an echo.…

Paperback. Condición: New. 2009. Disease, Diagnoses, and Dollars is about the costs of health care and their impact on health. The book provides a timely criticism of the health care industry and the costs of health care. Within the U.S. health care system, there is evidence that regions that spend more do not have better outcomes, and some evidence suggests that quality of care is lower in the regions that spend more, not less, on health care. The author takes the controversial position that mass markets have been created for services that may offer little or no benefit to patients. He forcefully argues that the overuse of medications and tests runs up the costs of health care. The concluding chapters offer suggestions for policy makers and for patients. Methods for systematically evaluating the cost-effectiveness of new guidelines are discussed. The final chapter provides practical suggestions to enable patients to share in decisions about treatments or tests that can have uncertain benefits.…

Paperback. Condición: New. 2010 ed. In The Search for Extraterrestrials, Monte Ross explores in detail the key problems in starting a search, the programs that have failed and those that continue. He includes the fundamental considerations and the physics of the necessary laser, UV, IR and RF technologies, as well as coding and information theory considerations.The author explores future possibilities providing the reader with a comprehensive view of the many ways signals from aliens could be sent and explains why the search using RF leaves more than 99% of the electromagnetic spectrum unexamined. He also demonstrates the many parts of the electromagnetic spectrum, considering the next likely steps in this unique enterprise. Given man's intrinsic nature to explore, the search will continue in one form or many, until success is achieved, which may be tomorrow or a millennium away.In summary, Monte Ross proposes to get around the failure of a fruitless search at radio frequencies by developing, in a precise way, the argument for searching for transmissions in the optical region of the electromagnetic spectrum.…

Paperback. Condición: New. See above. Softcover reprint of the original 1st ed. 1997.

Paperback. Condición: New. 2010 ed. Mentoring has always been an important factor in life and particularly in academia. In fact, making choices about educational pursuits and subsequent careers without input from mentors can prove disastrous. Fortunately, many individuals have "na- ral" mentors and for them these choices are greatly facilitated. Others are not pri- leged with natural mentors and as such often struggle with making these tough choices. Many times these individuals are from under served and disadvantaged backgrounds, where mentors are too few and far between. For them, deciding on which career path to take can be based not only on insufficient information but oft times on inaccurate information. Although the tips in this monograph are designed for helping all individuals who are interested in pursuing the study of science and science careers, a special mentoring focus is on those students who have not expe- enced the advantages of the privileged class. Additionally, tips are included for those who are interested in effectively mentoring these individuals. How and why a person gets to that point of wanting to mentor is not as important as the fact that they have made that commitment and this monograph will help them do exactly that. When I received my PhD in Reproductive Endocrinology from the University of Wisconsin, I was ready and anxious to discover all kinds of new and exciting aspects about this field of science.…

Paperback. Condición: New. 2013 ed. Throughout history, hearing and sound perception have been typically framed in the context of how sound conveys information and how that information influences the listener.  "Hear Where We Are" inverts this premise and examines how humans and other hearing animals use sound to establish acoustical relationships with their surroundings. This simple inversion reveals a panoply of possibilities by which we can re-evaluate how hearing animals use, produce, and perceive sound. Nuance in vocalizations become signals of enticement or boundary setting; silence becomes a field ripe in auditory possibilities; predator/prey relationships are infused with acoustic deception, and sounds that have been considered territorial cues become the fabric of cooperative acoustical communities. This inversion also expands the context of sound perception into a larger perspective that centers on biological adaptation within acoustic habitats. Here, the rapid synchronized flight patterns of flocking birds and the tight maneuvering of schooling fish becomes an acoustic engagement. Likewise, when stridulating crickets synchronize their summer evening chirrups, it has more to do with the 'cricket community' monitoring their collective boundaries rather than individual crickets establishing 'personal' territory or breeding fitness. In "Hear Where We Are" the author continuously challenges many of the bio-acoustic orthodoxies, reframing the entire inquiry into sound perception and communication. By moving beyond our common assumptions, many of the mysteries of acoustical behavior become revealed, exposing a fresh and fertile panorama of acoustical experience and adaptation.…

Paperback. Condición: New. 2007 ed. Human civilization has evolved to the point at which we can consider tapping space resources and expanding beyond Earth's atmosphere. The Introduction surveys possible motivations for large-scale human emigration to space. Since our early ancestors began to move out of Africa, humans have constantly expanded their range. Today, the pattern of human settlement extends from pole to pole. Humans regularly visit the upper troposphere and ocean floor and technology has enabled a few to even reside above the atmosphere in space stations.For the next few millennia at least (barring breakthroughs), the human frontier will include the solar system and the nearest stars. Will it better to settle the Moon, Mars, or a nearby asteroid and what environments can we expect to find in the vicinity of nearby stars are questions that need to be answered if mankind is to migrate into space.…

Paperback. Condición: New. Second Edition 2005. Frequent headaches seriously affect the lives of millions of sufferers. The result can be lost productivity and income, restrict activity, lower self-esteem, and even social isolation. For many, it takes years to find the appropriate medication to manage your headaches effectively.In Managing Your Headaches, Mark and Leah Green and John Rothrock explain what information you should record for your physician, what a physician is looking for in a neurological examination, and what you should (and should not) do to reduce the frequency and severity of your headaches. They discuss the effects of stress, psychological factors, possible food triggers, and environmental risk factors. The authors explain the symptoms of migraine, cluster, and tension-type headaches as well as less common types. They address common concerns and misconceptions and explain current knowledge about headache causes in understandable terms.The newest, most effective medications and their possible side effects are evaluated. The authors also explain how to prevent rebound headaches from over-medications and how non-medical treatments can be of value.Managing Your Headaches will tell you what you need to know to better control your headaches. Armed with the information in this book, you can be aware of the latest treatment options and can have more productive, informed discussions with your physician. Green, M.W. (ilustrador).…

Paperback. Condición: New. 2010. During more than four decades of involvement in amateur astronomy, I have enjoyed the privilege of rubbing shoulders with numberless amateur and professional astr- omers. In so doing I have encountered at first, second, and third hand many of the joys and pitfalls that sky watchers can experience in pursuit of the universe's wonders. I have often howled at tall tales that would not disgrace a pirate's tavern. Many of these astounding stories have become the kernels of my Dear Steve column items. Learning how to operate the technology for observing and imaging the universe is work enough for any aspiring astronomer; however, many have problems of their own making. Not only do they share these troubles with other astronomers, they are on the receiving end of colleagues and friends doing the same. With all these agonized communications flying about, it is hard to understand how anyone gets any real work done! For the amusement of my peers I have long fondly parodied these imagined literary exchanges. These fantasy ''Agony Aunt'' questions began appearing in the pages of the Loughton Astronomical Society's monthly (and Christmas Special) journals about 30 years ago, in the guise of The astronomer's problem page. This was by the kind indulgence of the then editor, namely myself. Happily, even when the magazine of the LAS evolved into something much better, under the tender and loving care of those who came after me, these problem letters were still in demand and even now occasionally appear.…