[V623.Ebook] PDF Download Rangeland Ecology And Management, by Harold Heady, R. Dennnis Child, R Dennis Child

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Over the last two decades the science of range management, like many other resource disciplines, has embraced and integrated environmental concerns in the field, the laboratory, and policy. Rangeland Ecology and Management now brings this integrated approach to the classroom in a thoroughly researched, comprehensive, and readable text. The authors discuss the basics of rangeland management—including grazing and practical management of animals and vegetation—and place those basics within the context of decision making for damaged land, riparian and water conservation, multiple use, and modeling. Concepts such as succession, stability, and range condition are examined and their effects discussed. Fire is considered as an environmental factor. Appendixes provide scientific and common names of range plants and animals. These and many other issues crucial to the understanding of successful range management combine to make the finest text for upper-level undergraduates now available.

• Sales Rank: #2731759 in Books
• Brand: Brand: Westview Press
• Published on: 1994-08-15
• Original language: English
• Number of items: 1
• Dimensions: 9.50" h x 6.25" w x 1.50" l,
• Binding: Hardcover
• 521 pages

Features

• Used Book in Good Condition

Review
"A timely treatment of grazing ecology, grazing management, and vegetation resource management." -- -J. L. Schuster, Texas A&M University

"A timely treatment of grazing ecology, grazing management, and vegetation resource management. It brings together a great span of information useful for multiple use management of rangeland worldwide. It would be a valuable addition to any natural resource manager's library and serve well as a text in range management." -- J. L. Schuster, Texas A&M University

"An important reference and source of information and inspiration for rangeland managers, rangeland scientists, and grazing ecologists throughout the academic and applied communities." -- Michael D. Pitt, University of British Columbia

"Range science is universal in its principles but the daily use of these principles is contingent upon local situations, in particular socioeconomic conditions. The present textbook differs from most similar books produced in the United States, as it takes some examples from outside North America, in particular from Africa and other tropical zones. If the present book is not yet a world-wide textbook in its perspectives, it is a good first step toward this aim." -- Henry Noel Hourou, Centre National de la Recherche Scientifique, Montpellier, France

"The impressive breadth of topics, historical context, and objective consideration of cultural values. I strongly recommend this book." -- -Mitchel McClaran, University of Arizona at Tucson

"The impressive breadth of topics, historical context, and objective consideration of cultural values. I strongly recommend this book for introductory range management courses at the college level, for graduate courses on selected topics in range ecology, as a reference for practicing natural resource managers, and as an essential addition to the library of all range management faculty." -- Mitchel McClaran, University of Arizona at Tucson

"This book is a classical rangeland management textbook of considerable value to teaching professionals." -- -Ecology

"This book is a classical rangeland management textbook of considerable value to teaching professionals.... The authors do a commendable job in presenting conflicting viewpoints in a cohesive, common sense manner." -- Ecology

"This volume fact presents a comprehensive review of achievements in research on range ecology and management.... It will benefit a range of clientele, including students, researchers, planners, and rangeland development agencies." -- Panjab Singh, Indian Grassland & Fodder Research Institute

"This volume....will benefit a range of clientele, including students, researchers, planners, and rangeland development agencies." -- -Panjab Singh, Indian Grassland & Fodder Research Institute

About the Author
Harold F. Heady is professor emeritus at the University of California at Berkeley. He was awarded the Berkeley Citation in 1991 in recognition of his long and preeminent career in range management. R. Dennis Child is National Program Leader, Range, with the USDA Agricultural Research Service in Beltsville, Maryland. Harold F. Heady is professor emeritus at the University of California at Berkeley. He was awarded the Berkeley Citation in 1991 in recognition of his long and preeminent career in range management. R. Dennis Child is National Program Leader, Range, with the USDA Agricultural Research Service in Beltsville, Maryland.

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[X757.Ebook] PDF Ebook Number Theory (Dover Books on Mathematics), by George E. Andrews

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Although mathematics majors are usually conversant with number theory by the time they have completed a course in abstract algebra, other undergraduates, especially those in education and the liberal arts, often need a more basic introduction to the topic.
In this book the author solves the problem of maintaining the interest of students at both levels by offering a combinatorial approach to elementary number theory. In studying number theory from such a perspective, mathematics majors are spared repetition and provided with new insights, while other students benefit from the consequent simplicity of the proofs for many theorems.
Among the topics covered in this accessible, carefully designed introduction are multiplicativity-divisibility, including the fundamental theorem of arithmetic, combinatorial and computational number theory, congruences, arithmetic functions, primitive roots and prime numbers. Later chapters offer lucid treatments of quadratic congruences, additivity (including partition theory) and geometric number theory.
Of particular importance in this text is the author's emphasis on the value of numerical examples in number theory and the role of computers in obtaining such examples. Exercises provide opportunities for constructing numerical tables with or without a computer. Students can then derive conjectures from such numerical tables, after which relevant theorems will seem natural and well-motivated..

• Sales Rank: #33660 in Books
• Published on: 1994-10-12
• Released on: 1994-10-12
• Original language: English
• Number of items: 1
• Dimensions: 8.64" h x .60" w x 5.44" l, .66 pounds
• Binding: Paperback
• 288 pages

About the Author

The Holy Grail of Number Theory
George E. Andrews, Evan Pugh Professor of Mathematics at Pennsylvania State University, author of the well-established text Number Theory (first published by Saunders in 1971 and reprinted by Dover in 1994), has led an active career discovering fascinating phenomena in his chosen field — number theory. Perhaps his greatest discovery, however, was not solely one in the intellectual realm but in the physical world as well.

In 1975, on a visit to Trinity College in Cambridge to study the papers of the late mathematician George N. Watson, Andrews found what turned out to be one of the actual Holy Grails of number theory, the document that became known as the "Lost Notebook" of the great Indian mathematician Srinivasa Ramanujan. It happened that the previously unknown notebook thus discovered included an immense amount of Ramanujan's original work bearing on one of Andrews' main mathematical preoccupations — mock theta functions. Collaborating with colleague Bruce C. Berndt of the University of Illinois at Urbana-Champaign, Andrews has since published the first two of a planned three-volume sequence based on Ramanujan's Lost Notebook, and will see the project completed with the appearance of the third volume in the next few years.

In the Author's Own Words:
"It seems to me that there's this grand mathematical world out there, and I am wandering through it and discovering fascinating phenomena that often totally surprise me. I do not think of mathematics as invented but rather discovered." — George E. Andrews

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5 of 5 people found the following review helpful.
Good Introductory Text for the Mathematically Inclined
By Philip A.
As a retired statistician and teacher, I never had the opportunity to formally study number theory. Over the years I was exposed to the topic and learned some of the basics -- sort of the tip of the iceberg. I learned enough to want to know more; hence, the acquisition of this book. I am quite familiar with Dover Publications and a big fan of their libary. Dover typically publishes comprehensive texts at reasonable prices. So when I was looking for a book on this subject and saw this one, I decided to buy it.

I am glad I did. I am working my way through it -- problems and all -- and have finished the first three chapters. I find the material well presented and satisfying my needs. As a statistician I appreciate the fact that Dr. Andrews elected to take a combinatorial approach to the topic. Being familiar with this type of reasoning makes certain topics easier for me to comprehend. The book is not for the layman and takes an individual with a solid mathematical background to get through it in its entirety. However, if you're interested in the topic and willing to put in the effort, the book will pay off.

23 of 24 people found the following review helpful.
Might as well be renamed 'Combinatorial Number Theory'
By Native of Neptune
A few years ago, I read this book by George Andrews of Penn State University into chapter 8 and this 1971 textbook by him already shows his long interest in both combinatorics and number theory. Where I stopped reading was when the author's proofs started being multiple pages long.

Here are the titles of the chapters with their starting pages:

// PART I Multiplicativity-Divisibility // 1. Basis Representation-3 / 2. The Fundamental Theorem of Arithmetic-12 / 3. Combinatorial and Computational Number Theory-30 / 4. Fundamentals of Congruences-49 / 5. Solving Congruences-58 / 6. Arithmetic Functions-75 / 7. Primitive Roots-93 / 8. Prime Numbers-100 // PART II Quadratic Congruences // 9. Quadratic Residues-115 / 10. Distribution of Quadratic Residues-128 // PART III Additivity // 11. Sums of Squares-141 / 12. Elementary Partition Theory-149 / 13. Partition Generating Functions-160 / 14. Partition Identities-175 // PART IV Geometric Number Theory // 15. Lattice Points-201 / There are four mathematical appendices and the full set of indices after the 15 chapters--213-259.

From the complicated table of contents above, one can see a broad sweep of combinatorial number theory. Part I is mostly pretty straight number theory, and that is what I did read. Part III on additivity is almost fully combinatorics more than number theory though. Still the price of this book is quite low to have access to all of this big range of mathematics to pick and choose what is most interesting to any given reader. Recommended.

17 of 17 people found the following review helpful.
Fresh Air
By J. Mohr
I recently took a one-semester course using this text. I found it to be one of the best textbooks I've used so far. The exposition was clear and easy to digest, with just the right number of clarifications and examples. The exercises were numerous, challenging and illuminating. No background beyond very basic set theory is assumed, and in fact the writer goes very far out of his way to keep his exposition separate from abstract algebra. This is most evident in the chapter on primitive roots. I can't speak for the second half of the book, on additivity, but I can say with certainty that the first nine chapters are worth the effort.

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• Published on: 2008
• Binding: Hardcover
• 336 pages

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Offers an ideal combination of econometric theory and hands-on practical training for undergraduate and graduate courses. The authorÂ's ambition is to provide realistic applications without sacrificing theoretical underpinnings. He uses a logical step-by-step approach to walk readers through numerous real-world examples of model specification, estimation, and hypothesis testing. The book also succeeds at being self-contained. By including background information on mathematics, probability, statistics, and software applications, readers have all the information they need in one place.

• Sales Rank: #2323375 in Books
• Published on: 1997-10
• Original language: English
• Number of items: 1
• Dimensions: 1.44" h x 7.77" w x 9.52" l,
• Binding: Hardcover
• 816 pages

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5 of 6 people found the following review helpful.
Fantastic
By A Customer
Great book. Professor Ramanathan has created a book with real life examples that make sense and elucidate the topic at hand. A definite must-have and must-keep for any economist.

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• Sales Rank: #3305651 in Books
• Published on: 2008-12-31
• Original language: English
• Dimensions: 9.65" h x .31" w x 6.69" l, .57 pounds
• Binding: Paperback
• 80 pages

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• Sales Rank: #1135484 in Books
• Published on: 2013-02-18
• Original language: English
• Number of items: 1
• Dimensions: 8.50" h x .8" w x 5.50" l, .11 pounds
• Binding: Paperback
• 32 pages

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1 of 2 people found the following review helpful.
Handling Uncertainty???
By Geoff Woods
Life's journey requires that we all from time to time face situations which are uncertain. Throughout recorded history the human race has attempted to provide answers to those things that we are desperate to know, which, there is no evidence or answers for (yet). So just add Grabavoi to the list of yet another theory about the meaning of life. The real key is: your ability to handle uncertainty. In other words, understand that fear is natural and only determines your reality if you allow it. You are the one who decides. Therefore, decide to go beyond your fears and live the life you deserve. You do not need Grabavoi's theory of purple spheres, or any of his other gimics, to present yourself to life's stage. Save yourself the trouble - bypass this book and live your life the way YOU decide! No gimics required.

1 of 1 people found the following review helpful.
The Great Book!
By Amazon Customer
Knowing the laws of thought, you can learn how to save themselves and save others. The Great Book!

1 of 1 people found the following review helpful.
Five Stars
By Olga
This is a very interesting book, which contains unique knowledge

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• Published on: 2011
• Binding: Paperback

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About the authors...
Cornelia Vasile is a senior researcher at the Romanian Academy, 'P. Poni' Institute of Macromolecular Chemistry, and Head of Department of Physical Chemistry of Polymers. Cornelia is also an Associate Professor at Laval University - Quebec Canada, at the 'Gh. Asachi' Technical University of Iasi and 'Al. I. Cuza' University of Iasi. She is the author or co-author of eight books, 300 scientific papers and holder of 38 patents.

• Sales Rank: #4184409 in Books
• Published on: 2008-04-22
• Original language: English
• Number of items: 1
• Dimensions: 10.25" h x .42" w x 8.25" l, 1.02 pounds
• Binding: Paperback
• 184 pages

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