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A Sand County Almanac

A Sand County Almanac And Sketches Here And There
Author: Aldo Leopold
Publisher: Ballantine Books
ISBN: 9780345321350
Size: 39.26 MB
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Analysis of Synchronous Machines, Second Edition is a thoroughly modern treatment of an old subject. Courses generally teach about synchronous machines by introducing the steady-state per phase equivalent circuit without a clear, thorough presentation of the source of this circuit representation, which is a crucial aspect. Taking a different approach, this book provides a deeper understanding of complex electromechanical drives. Focusing on the terminal rather than on the internal characteristics of machines, the book begins with the general concept of winding functions, describing the placement of any practical winding in the slots of the machine. This representation enables readers to clearly understand the calculation of all relevant self- and mutual inductances of the machine. It also helps them to more easily conceptualize the machine in a rotating system of coordinates, at which point they can clearly understand the origin of this important representation of the machine. Provides numerical examples Addresses Parke(tm)s equations starting from winding functions Describes operation of a synchronous machine as an LCI motor drive Presents synchronous machine transient simulation, as well as voltage regulation Applying his experience from more than 30 years of teaching the subject at the University of Wisconsin, author T.A. Lipo presents the solution of the circuit both in classical form using phasor representation and also by introducing an approach that applies MathCAD, which greatly simplifies and expands the average studente(tm)s problem-solving capability. The remainder of the text describes how to deal with various types of transientse"such as constant speed transientse"as well as unbalanced operation and faults and small signal modeling for transient stability and dynamic stability. Finally, the author addresses large signal modeling using MATLAB/Simulink, for complete solution of the non-linear equations of the salient pole synchronous machine. A valuable tool for learning, this updated edition offers thoroughly revised content, adding new detail and better-quality figures.
A Sand County Almanac
Language: en
Pages:
Authors: Aldo Leopold
Categories:
Type: BOOK - Published: 1984 - Publisher: Ballantine Books
Analysis of Synchronous Machines, Second Edition is a thoroughly modern treatment of an old subject. Courses generally teach about synchronous machines by introducing the steady-state per phase equivalent circuit without a clear, thorough presentation of the source of this circuit representation, which is a crucial aspect. Taking a different approach, this book provides a deeper understanding of complex electromechanical drives. Focusing on the terminal rather than on the internal characteristics of machines, the book begins with the general concept of winding functions, describing the placement of any practical winding in the slots of the machine. This representation enables readers to clearly understand the calculation of all relevant self- and mutual inductances of the machine. It also helps them to more easily conceptualize the machine in a rotating system of coordinates, at which point they can clearly understand the origin of this important representation of the machine. Provides numerical examples Addresses Parke(tm)s equations starting from winding functions Describes operation of a synchronous machine as an LCI motor drive Presents synchronous machine transient simulation, as well as voltage regulation Applying his experience from more than 30 years of teaching the subject at the University of Wisconsin, author T.A. Lipo presents the solution
A Sand County Almanac
Language: en
Pages: 240
Authors: Aldo Leopold
Categories: Nature
Type: BOOK - Published: 2020-08-12 - Publisher: Oxford University Press, USA
Few books have had a greater impact than A Sand County Almanac, which many credit with launching a revolution in land management. Written as a series of sketches based principally upon the flora and fauna in a rural part of Wisconsin, the book, originally published by Oxford in 1949, gathers informal pieces written by Leopold over a forty-year period as he traveled through the woodlands of Wisconsin, Iowa, Arizona, Sonora, Oregon, Manitoba, and elsewhere; a final section addresses the philosophical issues involved in wildlife conservation. Beloved for its description and evocation of the natural world, Leopold's book, which has sold well over 2 million copies, remains a foundational text in environmental science and a national treasure.
Companion to A Sand County Almanac
Language: en
Pages: 320
Authors: J. Baird Callicott
Categories: Science
Type: BOOK - Published: 1987-09-01 - Publisher: Univ of Wisconsin Press
The first sustained study of Leopold's seminal book as well as a work of art, philosophy, and social commentary.
The Primal Place
Language: en
Pages: 256
Authors: Robert Finch
Categories: History
Type: BOOK - Published: 2007-05-09 - Publisher: The Countryman Press
From acclaimed author and naturalist Robert Finch, a richly detailed observance of Cape Cod's seemingly vanished natural and human past, as it clings to its present landscape. This is a voyage of discovery, a personal odyssey into the nature of a single Cape Cod neighborhood. It is a rich portrait, beautifully drawn, of a landscape and a community whose essential character lies in their penetrating interface with the sea. But it is also an individual quest, a journey of the heart and mind in which the author seeks "entrance, or rather re-entrance" into "that vast living maze stretching out beyond my lines of sight."
A Sand County Almanac, and Sketches Here and There Sketches Here and There
Language: un
Pages:
Authors: Aldo Leopold
Categories: Natural history
Type: BOOK - Published: 1968 - Publisher:
Books about A Sand County Almanac, and Sketches Here and There Sketches Here and There
Marshland Elegy
Language: en
Pages: 30
Authors: Aldo Leopold
Categories: Marshes
Type: BOOK - Published: 1999 - Publisher:
Introductions by George Archibald and Nina Leopold Bradley.
Aldo Leopold's Odyssey, Tenth Anniversary Edition
Language: en
Pages: 525
Authors: Julianne Lutz Warren
Categories: Biography & Autobiography
Type: BOOK - Published: 2016-05-24 - Publisher: Island Press
In 2006, Julianne Lutz Warren (née Newton) asked readers to rediscover one of history’s most renowned conservationists. Aldo Leopold’s Odyssey was hailed by The New York Times as a “biography of ideas,” making “us feel the loss of what might have followed A Sand County Almanac by showing us in authoritative detail what led up to it.” Warren’s astute narrative quickly became an essential part of the Leopold canon, introducing new readers to the father of wildlife ecology and offering a fresh perspective to even the most seasoned scholars. A decade later, as our very concept of wilderness is changing, Warren frames Leopold’s work in the context of the Anthropocene. With a new preface and foreword by Bill McKibben, the book underscores the ever-growing importance of Leopold’s ideas in an increasingly human-dominated landscape. Drawing on unpublished archives, Warren traces Leopold’s quest to define and preserve land health. Leopold's journey took him from Iowa to Yale to the Southwest to Wisconsin, with fascinating stops along the way to probe the causes of early land settlement failures, contribute to the emerging science of ecology, and craft a new vision for land use. Leopold’s life was dedicated to one fundamental dilemma: how can
The Land Pyramid as Philosophy and Structure in Aldo Leopold's
Language: en
Pages: 15
Authors: Susanne Hefekäuser
Categories: Literary Collections
Type: BOOK - Published: 2012-07-05 - Publisher: GRIN Verlag
Seminar paper from the year 2007 in the subject American Studies - Literature, grade: 1,0, Johannes Gutenberg University Mainz (Department of English and Linguistics), course: Nature Writing, language: English, abstract: The essays which compose Aldo Leopold’s A Sand County Almanac and Sketches Here and There have been written in a time span of over thirty years, some dating back to the 1910’s. Therefore, the work could rather be seen as a collection of essays than a monographic book. Additionally, Leopold writes about such a diversity of places and species, that the work as a whole seems to be very fragmented. However, this style of composition is not as randomized as it seems at first glance. Instead, as a whole, the essays of A Sand County Almanac form the structure of an ecosystem with interdependent parts supporting and challenging each other. In this paper, I will first explore Leopold’s own definition of an ecosystem as he describes it in the subchapter “The Land Pyramid”. Then, I will demonstrate that A Sand County Almanac mirrors the complex structures of such a system.
Round River
Language: en
Pages: 286
Authors: Aldo Leopold
Categories: Nature
Type: BOOK - Published: 1972-03-30 - Publisher: Oxford University Press
To those who know the charm of Aldo Leopold's writing in A Sand County Almanac, this collection from his journals and essays will be a new delight. The journal entries included here were written in camp during his many field trips--hunting, fishing, and exploring--and they indicate the source of ideas on land ethics found in his longer essays. They reflect as well two long canoe trips in Canada and a sojourn in Mexico, where Leopold hunted deer with bow and arrow. The essays presented here are culled from the more contemplative notes which were still in manuscript form at the time of Leopold's death in 1948, fighting a brush fire on a neighbor's farm. Round River has been edited by Leopold's son, Luna, a geologist well-known in the field of conservation. It is also charmingly illustrated with line drawings by Charles W. Schwartz. All admirers of Leopold's work--indeed, all lovers of nature--will find this book richly rewarding.
For the Health of the Land
Language: en
Pages: 262
Authors: Aldo Leopold
Categories: Nature
Type: BOOK - Published: 2012-07-16 - Publisher: Island Press
Aldo Leopold's classic work A Sand County Almanac is widely regarded as one of the most influential conservation books of all time. In it, Leopold sets forth an eloquent plea for the development of a "land ethic" -- a belief that humans have a duty to interact with the soils, waters, plants, and animals that collectively comprise "the land" in ways that ensure their well-being and survival.For the Health of the Land, a new collection of rare and previously unpublished essays by Leopold, builds on that vision of ethical land use and develops the concept of "land health" and the practical measures landowners can take to sustain it. The writings are vintage Leopold -- clear, sensible, and provocative, sometimes humorous, often lyrical, and always inspiring. Joining them together are a wisdom and a passion that transcend the time and place of the author's life.The book offers a series of forty short pieces, arranged in seasonal "almanac" form, along with longer essays, arranged chronologically, which show the development of Leopold's approach to managing private lands for conservation ends. The final essay is a never before published work, left in pencil draft at his death, which proposes the concept of land health