EBooks by sanraj
Posted: June 24th, 2009, 7:20pm CEST by sanraj
Entertaining Mathematical Puzzles
General Publishing Company, Ltd. | ISBN 0-486-25211-6 | ENGLISH | PDF | 125 PAGES | 2.50 MB
Introduction
In selecting material for this collection I have done my best to find puzzles that are unusual and entertaining, that call for only the most elementary knowledge of mathematics, but at the same time provide stimulating glimpses into higher levels of mathematical thinking. The puzzles (many of which appeared in my column "On the Light Side" that ran in Science World) have been grouped into sections, each dealing with a different area of mathematics. Brief comments at the beginning of each section suggest something of the nature and importance of the kind of mathematics one must use in tackling the puzzles of that section. In the answers, I have tried to go into as much detail as space permits in explaining how each problem is solved, and pointing out some of the inviting paths that wind away from the problems into lusher areas of the mathematical jungle. Perhaps in playing with these puzzles you will discover that mathematics is more delightful than you expected. Perhaps this will make you want to study the
subject in earnest, or less hesitant about taking up the study of a science for which a knowledge of advanced mathematics will eventually be required.
Surely no one today can doubt the enormous practical value of mathematics. Without its use as a tool, the discoveries and achievements of modem science would have been impossible. But many people do not realize that mathematicians actually enjoy mathematics. Take my word for it, there is as much satisfaction in knocking over an interesting problem with a well-aimed thought as there is in knocking over ten wooden pins with a well-aimed bowling ball. In one of L. Frank Baum's funniest fantasies, The Emerald City of Oz, Dorothy (together with the Wizard and her uncle and aunt) visit the city of Fuddlecumjig in the Quadling section of Oz. Its remarkable inhabitants, the Fuddles, are made of pieces of painted wood cleverly fitted together like three-dimensional jigsaw puzzles. As soon as an outsider approaches they scatter in a heap of disconnected pieces on the Hoor so that the visitor will have the pleasure of putting them together again. As Dorothy's party leaves the city, Aunt Em remarks:
"Those are certainly strange people, but I really can't see what use they are, at all." "Why, they amused us for several hours," replies the Wizard. "That is being of use to us, I'm sure." "I think they're more fun than playing solitaire or mumbletypeg," Uncle Henry adds. "For my part, I'm glad we visited the Fuddles."
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Posted: June 24th, 2009, 7:19pm CEST by sanraj
Positive Attitude For Unlimited Success
Wings Of Success | ENGLISH | PDF | 87 PAGES | 1.48 MB
Introduction
Positive Attitude: What Is It?
What does having a positive attitude then really boil down to, our thoughts, actions, patterns, habits, and behavior have us using, targeting and utilizing our energy and enthusiasm in a particular way. We think, act and do…If you are mainly positive, you will be focused on good things, happy thoughts, and successful outcomes, seeing the glass half-full to an extent. Negatively, you will be focusing on bad things, sad thoughts, unsuccessful outcomes and act and behave negatively too. Your goals and energy will not be focused and purposefully driven towards success, half-hearted at best. There is an undeniable link between personal performance, confidence and even health and our positive thoughts. Matching, triggering neuro-chemical and physical responses, increased mental alertness and release of physical energy, improved respiration and circulation, boosts our abilities. The reverse is true, triggering the fight or flight response and instinct when we are decisively negative. Which can lead to loss of
energy, creativity, motivation and lower selfesteem. You can effectively turn this habit of positive thinking into a power tool boosting not only your life, success and future, but also your health and wellbeing. There are numerous self-help books, products and even training courses that you can take to learn more about endorphins for example and how positive thoughts and can and motivate your day, towards more positive outcomes.
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Posted: June 24th, 2009, 7:18pm CEST by sanraj
The Nutritionist
Haworth | ISBN 0-203-88700-X | ENGLISH | PDF | 388 PAGES | 1.63 MB
Introduction
The seeming simplicity of our daily activities is greatly contrasted by the complexity of our true nature—quite a paradox, no doubt. It is simple in that, on the outside, the goals of our body may appear few. We internalize food, water, and oxygen while at the same time ridding ourselves of carbon dioxide and other waste materials. These operations support reproduction, growth, maintenance, and defense. Yet on the inside our body may seem very complex as various organs participate in a tremendous number of complicated processes intended to meet the simple goals previously mentioned. Nutrition is just one part of this paradoxical relationship. The objective of nutrition is simple: to supply our body with all of the necessary nutrients, and in appropriate quantities, to promote optimal health and function. However, in practice, nutrition is far from that simple. There seem to be too many nutrients, controversial nutrients, and different conditions, such as growth, pregnancy, and exercise, to allow nutrition to be a simple topic. Although we have long appreciated food, it has only been in the more recent years that we have really begun to understand the finer relationship between food and our body. Most nutrients have been identified within the last century or so and right now nutrition is one of the most prevalent areas of scientific research. This is to say that our understanding of nutrition is by no means complete. It continues to evolve in conjunction with the most current nutrition research. It seems that not a week goes by without hearing about yet another discovery in nutrition. It is hard to believe that just a few decades ago the basic four food groups were pretty much all the nutrition known by most people. Today nutrition deeply penetrates into many aspects of our lives, including preventative and treatment medicine, philosophy, exercise training, and weight management. Our diet has been linked to cardiovascular health, cancer, bowel function, moods, and brain activity, along with many other health domains. We no longer eat merely to satisfy hunger. Without doubt, nutrition has become a matter of great curiosity and/or concern for most of us today.
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Posted: June 24th, 2009, 7:17pm CEST by sanraj
Water - The Miracle Cure
ConX Publishing. | ISBN 0-9731336-8-6 | ENGLISH | PDF | 129 PAGES | MB
Introduction
What if you could get, for free, a miracle substance to alleviate symptoms of pain, depression, chronic fatigue, attention deficit disorder, stress, hypertension, back pain, peptic ulcer disease, migraines, arthritis pain, colitis, chronic constipation, kidney stones, heartburn, high cholesterol, morning sickness, and obesity? You can. This wonder elixir is something we often overlook, yet it is available in unlimited quantities in almost every household.
It is almost too simple to believe that even the water we get from our taps has the power to reduce and eliminate severe medical conditions. Yet in the next few pages you will see how water should be the treatment of choice for pain, inflammation, and autoimmune diseases. Instead of reaching for more drugs, that are increasingly expensive and often have negative side effects, we should drink more water instead. The water you use to treat your ailments doesn't have to be spring water or distilled; purified water from your household tap will do just as well.
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Posted: June 24th, 2009, 7:16pm CEST by sanraj
Healing Back Pain - The Mind-Body Connection
Warner Books | ISBN 0-7595-6193-1 | ENGLISH | PDF | 209 PAGES | 1.10 MB
Introduction
This book is the successor to Mind Over Back Pain, which was published in 1984. It described a medical disorder known as the Tension Myositis Syndrome (TMS), which I have had reason to believe is the major cause of the common syndromes of pain involving the neck, shoulders, back, buttocks and limbs. In the years since that first publication I have further developed and clarified my concepts about how to diagnose and treat TMS, hence the necessity for this book. Over the years the increasing incidence of these pain syndromes has created a public health problem of impressive proportions. One continues to see the statistic that somewhere around 80 percent of the population have a history of one of these painful conditions. An article in Forbesmagazine in August 1986 reported that $56 billion are spent annually to deal with the consequences of this ubiquitous medical disorder. It is the first cause of worker absenteeism in this country and ranks second behind respiratory infections as a reason for a doctor visit. All this has happened in the past thirty years. Why? After a few million years of evolution, has the American back suddenly become incompetent? Why are so many people prone to back injury? And why has the medical profession proven so helpless to stem the epidemic? It is this book?s purpose to answer those and many other questions about this widespread problem. The thesis will be advanced that, like all epidemics, this one is the result of medicine?s failure to recognize the nature of the disease, that is, to make an accurate diagnosis. The plague ravaged the world because no one knew anything about bacteriology or epidemiology at the time. It may be hard to believe that highly sophisticated twentieth-century medicine cannot properly identify the cause of something so simple and common as these pain disorders but physicians and medical researchers are, after all, still human and, therefore, not all-knowing and, most important, subject to the enduring weakness of bias. The pertinent bias here is that these
common pain syndromes must be the result of structural abnormalities of the spine or chemically or mechanically induced deficiencies of muscle. Of equal importance is another bias held by conventional medicine that emotions do not induce physiologic change. Experience with TMS contradicts both biases. The disorder is a benign (though painful) physiologic aberration of soft tissue (not the spine), and it is caused by an emotional process. I first appreciated the magnitude of this problem in 1965 when I joined the staff of what is now known as the Howard A. Rusk Institute of Rehabilitation Medicine at New York University Medical Center as director of outpatient services. It was my first introduction to large numbers of patients with neck, shoulder, back and buttock pain. Conventional medical training had taught me that these pains were primarily due to a variety of structural abnormalities of the spine, most commonly arthritic and disc disorders, or to a vague group of muscle conditions attributed to poor
posture, underexercise, overexertion and the like. Pain in the legs or arms was presumed due to compression (pinching) of nerves. However, it was not at all clear how these abnormalities actually produced the pain.
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Posted: June 24th, 2009, 7:15pm CEST by sanraj
Emergency Echocardiography
Springer-Verlag London Limited | ISBN 978-1-84882-335-8 | ENGLISH | PDF | 194 PAGES | 3.40 MB
Introduction
The idea of writing this book arose from frequent encounters with cardiologists in training and intensivist colleagues who highlighted the contribution of echocardiographic studies to the evaluation of difficult cases. In this, our experience only mirrored the growing role of echocardiography in the immediate management of hemodynamically unstable or acutely ill patients, as increasingly acknowledged in the literature.1–3
Echocardiography is the most versatile cardiac imaging technology readily available today at the patient’s bedside. Its superb diagnostic input relates to the ability to identify any hemodynamic condition and cardiac pathology that implies a morphologic and/ or a flow pattern change. Impressive technological advances over the last half century (Table I.1) and the advent of small, portable, and yet powerful echocardiographic machines pushed this technique in the frontline of diagnostic strategies when dealing with critically ill patients. Indeed, we are witnessing a change of medical practice, whereby, the management of hemodynamically unstable patients relies less on invasive data and increasingly more on the noninvasive assessment immediately obtainable with echocardiography.
It is the aim of this book to be a step-by-step, how- and whatto- do, easy to use guide for the benefit of cardiology and intensive care doctors and sonographers faced with critically ill patients for whom major therapeutic decisions could depend on the information provided by a timely and accurate echocardiographic examination. It tries to address what was perceived to be the practical needs of cardiology trainees and of intensivists faced with the increased use of echocardiography in an acute care setting. Because of the intended dual audience of this book, both pure “cardiological” topics such as aortic pathology, valvular emergencies, mechanical complications of myocardial infarction, or tamponade and more “intensive care” or “mixed” situations such as pulmonary embolism, resuscitation, sepsis, and the need for filling status assessment are covered.
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Posted: June 24th, 2009, 7:13pm CEST by sanraj
Anatomy of a Robot
The McGraw-Hill Companies, Inc. | ISBN 0-07-141657-9 | English | PDF | 321 Pages | 4.40 MB
Introduction
The boundless energy of youth often must give way to the laws of physics. All too often I’ve seen bright ideas flounder for a lack of fundamental knowledge. If this book can foster the development of the art, if it can encourage and educate the robotic community, if it can provide the missing ingredients—the secret sauce—then I did my job right. If you have a sense that a robot is more than wires and wheels, then this book is for you. Math rules physics, and physics rules robots. This book sheds light on the math and physics behind a robot design, and does so in an accessible way. The text was written for all ages, from high school through college and beyond. The math used in the book includes algebra, calculus, and differential equations. For readers unacquainted with these subjects, I made sure the text “returns to Earth” often. Nobody should be left behind. The laws of physics and math are evident in everyday life, and several examples are given in this book. Throughout the history of science and technology, the path to great discoveries has almost always started with the observation of simple events. Newton’s apple, Einstein’s empty room in space, and Shannon’s word games are clear examples. Proceeding from an intuitive, personal understanding of the basic laws of physics and math, you can take your understanding further. Using this knowledge, you can predict the behavior of your robot in advance. As problems crop up, you’ll have the basic knowledge to move effectively toward solutions. Throughout the book, I’ve also thrown in experience gained from 32 years of engineering design. I can’t be there when you build your robot, but I can put tools in your belt and pass on such wisdom as we both can sit still for. Originally, I started this project for the fame, fortune, and groupies. As the chapters rolled out, I got my true rewards. I relearned the basic technologies to better explain them. I dug into the larger questions lurking behind the equations and technology. And as the book developed, I found an outlet f r other thoughts I’ve had for quite some time. I hope my philosophical asides prove entertaining.
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