Estimation in Conditionally Herteroscedastic Time Series Models

Book Description

In his seminal 1982 paper, Robert F. Engle described a time series model with a time-varying volatility. Engle showed that this model, which he called ARCH (autoregressive conditionally heteroscedastic), is well-suited for the description of economic and financial price. Nowadays ARCH has been replaced by more general and more sophisticated models, such as GARCH (generalized autoregressive heteroscedastic).

This monograph concentrates on mathematical statistical problems associated with fitting conditionally heteroscedastic time series models to data. This includes the classical statistical issues of consistency and limiting distribution of estimators. Particular attention is addressed to (quasi) maximum likelihood estimation and misspecified models, along to phenomena due to heavy-tailed innovations. The used methods are based on techniques applied to the analysis of stochastic recurrence equations. Proofs and arguments are given wherever possible in full mathematical rigour. Moreover, the theory is illustrated by examples and simulation studies.

Book Description

How do organizations achieve coordinated action when it is most difficult to do so? In light of a number of topical cases of organizational change, this books develops a theory, which can help us both to understand and to influence the organization's propensity for action and change. Key concepts in the theory are organizational ideology, expectations, motivation and commitment. It becomes increasingly clear that forceful action conflicts with rationality in the classical sense; therefore the conclusion and recommendations presented in this book differ very much from those traditionally proposed. The book explains why organizations are irrational, and why they should be so.

This new understanding of organizational action and change should be of interest to all students of management, at an undergraduate and postgraduate level, to researchers, or to consultants and managers in both the public and private sector.

Book Description

Boasting more than one thousand color pictures, diagrams, tables, and photographs, The Nature Encyclopedia offers a stimulating reference guide that will enthrall everyone interested in the natural world, whether student or amateur naturalist. Here are more than 6,500 alphabetically arranged entries that cover all aspects of nature, from the rich diversity of the Earth's flora and fauna and their habitats, through significant biological processes, to such pressing modern issues as conservation, pollution, and resource sustainability. Readers will find information on microscopic animals such as plankton and on the great blue whale that feed on these animals. Indeed, there are entries on virtually any topic under the sun--alligators and butterflies, stately red woods and poisonous mushrooms, dank rain forests and glittering coral reefs. In addition to the general entries, some 30 special interest topics--from evolution and genetics to new forms of taxonomy--are covered in individually designed, single- and double-page features. Focusing on subjects that educational specialists consider key, these feature articles include in-depth text and more comprehensive illustrations than found in a normal entry, to ensure a full understanding of the topic. The encyclopedia also features a Ready Reference section that provides a wealth of at-a-glance information on subjects such as endangered species, ecosystem conversions, and important natural history institutions. Each of the entries has been written by recognized authorities in fields ranging from biology and zoology to botany and earth science. Whether you are interested in deserts or forests, farm animals or wild predators, long-extinct dinosaurs or tiny creatures in your own back yard, you will find ample information in The Nature Encyclopedia.

Book Description

This concise, richly illustrated biography of the African elephant--from ancient Egypt to the most recent discoveries about elephant society and communication--is also a passionate plea to preserve the species.

The relationship between elephant and man has been dominated by brutality and persecution. Centuries of exportation, unabated hunting for ivory, and shrinking habitat have left only five countries in Africa with sizeable elephant herds. Corrupt governments and lawless poachers are currently flouting what little protection the elephant has.

What will be the African elephant's destiny? Will it soon be relegated to zoos and nature preserves? Martin Meredith lays out the history of this majestic animal from the Egyptian pharaohs' first ivory expeditions 2500 years ago to today, and explores the elephant's role in literature and popular culture. He shares recent extraordinary discoveries about the elephant's ability to communicate, its sophisticated family and community structure, and the ways--rare in the animal world--in which elephants show compassion and loyalty to each other. Meredith also illuminates how the legacy of colonialism in Africa--and unrelenting poverty, disease, and civil war--affects the elephant's fate. Can Africa find a way to preserve its most enduring symbol of freedom? Readers of national bestsellers including Silent Thunder, Elephant Memories, and When Elephants Weep will want to read this urgent, illuminating book.

Customer Reviews:

Beautiful, heartbreaking, and compelling.......2007-07-21

I highly recommend this book to anyone interested in the fate of endangered wildlife, not just elephants. And to anyone interested in Africa, for it is the story of much more than the elephant. Meredith has written a beautiful, captivating, and often heartbreaking and enraging account of the African elephant's encounter with mankind, and how the species has suffered from man's insatiable greed, in particular for the ivory of this beautiful animal. There is also an excellent account of efforts to reverse the catastrophic decline in the African elephant population, due to the ivory trade.

As readable as a fine novel, this book also offers a great introduction to the unique nature of the elephant--the largest land mammal, and yet one of the most intelligent, sensitive, and emotional. If you do not know much about elephants, you will never look at an elephant the same way again.

If only it was more about the elephants themselves........2005-04-26

As other reviewers have pointed out, most of this book is not about the elephants themselves. I knew this going in, but as I enjoyed looking at history from the perspective of salt (Mark Kurlansky, "Salt"), I was hoping I would enjoy "Elephant Destiny" more than I did. The chapters on the elephants are toward the end (chapters 18-22), and are fascinating: it would be hard for them not to be, the social life of elephants is so interesting. For those of you who are not going to read this book, or parts of it, the two main researchers into elephant behavior are apparently Cynthia Moss and Joyce Poole, and Katy Payne has a book on elephant communication. Meredith mentions elephants swimming across rivers. Fossils of pygmy elephants have been found on some Asian islands, and it is speculated their ancestors actually swam to the islands.

PACHYDERMS ARE PRECIOUS..........2004-06-28

This is a wonderful, well written, illustrated book about elephants and their role throughout history, as well as their present state in the world. I confess, I did not know much about elephants before reading this book. I now feel I know something about them, and what I have discovered is fascinating. I did not realize how complex and intelligent these magnificent creatures are, nor how dangerously close to extinction they have become. It would, indeed, be tragic were that to happen, for elephants are sociable, sentient, and intelligent.

The author takes the reader on a tour throughout history, describing the elephant's interaction with humanity and its role in the affairs of mankind and its impact on the environment. The book traces the influence of the elephant and the various uses to which mankind has put this great creature. From being used as a conveyance in times of war, to being paraded as an object of wonder and curiosity, to being hunted down mercilessly for its ivory tusks, the elephant has had a somewhat checkered history in terms of its interaction with human beings.

The author also carefully relates the elephant's own social structure, which is a sophisticated and complex one. Their mating rituals, their family life, and their handling of death are all addressed by the author, who paints a picture of a multi-faceted and remarkable society of elephants. It is only in the twentieth century that its complexity has begun to be understood by man. It is hoped that this is not a case of too little, too late.

Unfortunately for the elephant, however, its positive qualities have taken a backseat to its value as a commodity. Elephant tusks may eventually bring about the demise of the entire species, if the world does not take heed. A portion of this book is devoted to the ivory wars that have decimated the great elephant herds of Africa, turning elephants into an endangered species. Were elephants to be driven to extinction by pure, unadulterated greed, it truly would be tragic. This book effectively drives that point home.

The Romance of the Elephant.......2003-11-16

The subtitle is slightly misleading. This book is definitely a biography of the African elephant, but not from the point of view of the elephant, but of man's relationship with the African elephant. So note. This means that the science of the elephant is not the main thrust of this book, in fact, the biology, zoology, and ecology of the elephant is maybe a fourth of this book. So if you are looking solely for science, this book will disappoint you.

Bottom line first: If you are a fan of the elephant, or if this is your first book on the elephant, than this is a good book. If you know a lot about the science of the elephant, and want to know more about the culture of the elephant, this is a good start. Those wanting more science or more about the craft of ivory art, look else where.

Now, that is it, but read on for more details, if you like. This book is -rather- the history of man's relationship with the African elephant. It's quite romantic, tragic, and greedy at the same time. Meredith presents us with many facets of the elephant. From it's mythology in the ancient world, symbolizing both wisdom, and power. To the greed of the ivory trade which has happened several times in the past and has almost lead to the extinction of the elephant each time. There are plenty of color pictures showing the elephant as well as some nice illustrations peppered throughout the book.

So it starts right away with ancient Egypt, Greece, and Rome. And just how the elephants were used in these societies. Mostly for war, and for ivory. So, we see the history of elephant use in wars, from Alexanders first encounter with them, to Carthage's valiant attempt to overthrow Rome.

Meredith has almost captured the romance and the allure of Africa, from a colonial European viewpoint. Here, we are introduced to fabled lands of Punt, of Zanzibar. He even shows us the ties between the elephant and the Arabian nights. There are plenty of stories of the hunt, and of legendary hunters and their big adventures which included not only hunting elephants, but discovering such places as the source of the Nile.

There are some exciting passages of just how the elephant was hunted. From hunters that would to hang by an elephant tail, and bring it down, to spear hunters, to eventually gunmen.

Now, I say, from a colonial European viewpoint, because the ivory trade is intimately tied to both gold and slavery, and Meredith isn't shy to report these things too. The terrible greed is presented with some really vivid stories. One of them is about Arab merchants killing women's babeis to help the women better carry the ivory.

Throughout all the mayhem, Meredith shows the elephant as a very intelligent, gentle, and dare I say wise being. The stories are quite heartbreaking. Hunters doing mortal wound experiments finally notices the down elephant tearing, and puts it out of its misery. A calf cries in help after being stuck in a hunters trap. It's family tries to pull it out, but is scared away by hunters. Later, another troop comes, and the calf is adopted. Siblings knotting their tusks in intimate family bonding. In some ways, elephant families are more intimate than human ones.

Later chapters, present the science of the elephant. And since I'm a science fan, I found these chapters the most interesting. Meredith points out the differences between African savannah and forest elephants, and that of Indian elephants. He also writes about how elephants communicate, and their mating behaviors. But, by far the most interesting chapter in the entire book had to do with death. It is speculated that elephants 'know' of death, just as much as we do. They seem to grieve. They bury their dead. The look after the bones of their ancestors. In one story, an elephant breaks into a compound, retrieves the bones of a downed elephant, and places them back at the site where the downed elephant was shot.

Now let's get on with the negatives. Meredith focuses too much on the destruction of the elephant. Instead of having one chapter about how elephants were decimated by colonial europeans, we have several chapters each focusing on a particular region of Africa. And for each chapter, the story is much the same: an explorer finds a route into a region, a trade route is established, tusks, slaves, gold, rubber come out of the region.

It is a sad tale, and the story deserves it space, but I would rather they had focused on other things. For instance, he could have discussed more about the luxury of ivory. What makes it so alluring for people. We could have pictures of some of the items he talks about, like the chyrselephantine that are statues made of ivory and gold. With people more sympathetic to the elephant, it is hardly understandable today why anyone would want to kill an elephant to make a trinket.

Also, there are many questions unanswered that I wish Meredith will address in his next edition. What was man's pre-historical relationship with the elephant? Native Africans seemed to have lived with the elephant peacefully, it was the outsiders and ancient cultures that had a thirst for elephants. Meredith please speculate! Also, Elephants can have a powerful influence on the environment, turning jungles into savannahs. Could it be that the elephant had some influence on the expanding Sahara desert?

This is the biography of the African elephant, but I would have loved to have known the fate of Indian elephants. What about the species of elephants that lived on Greece which were only 3 feet high?

Finally, the illustrations, and pictures were a nice edition, but some key photos/drawings should be added to the next edition. In particular, is the comparison of the African savannah elephant to the African forest elephant to the Indian elephant, comparing the visible differences between these three species.

So, in summary, this book is a broad look at man's relationship with the African elephant. There are some parts that are too detailed, but Meredith overall does a fine job. He shows us just how atrocious, cruel, and mean Man's behavior has been, in stark contrast to the wise, compassionate, and graceful behavior of the Elephant.

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The Collector's Guide to Ski-Doo Snowmobiles (Collector's Guide To...)
Phillip J. Mickelson
Manufacturer: Iconografix, Inc.
ProductGroup: Book
Binding: Paperback

General | Winter Sports | Sports | Subjects | Books
General | Sports | Subjects | Books
General | Automotive | Nonfiction | Subjects | Books
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ASIN: 1583881336

Book Description

From the first Bombardier snow machine to the newer Formula series models, all Ski-Doo snowmobiles to 1995 are covered here. This book traces the development of the snowmobiles, their engines, suspensions, and comfort features. It takes you from the age of wooden skis and bodywork to today's light, powerful, and aerodynamic Ski-Doo models. Technical specifications and year-by-year updates are included for each model, along with 135 photos. Snowmobiles covered in detail here include the early models- including the 'Ski-Dog'-the Alpine, Olympique, Chalet, T'NT, Blizzard, Elan, Citation, Safari, Formula series models, and more. This Classic Reprint was previously published as Illustrated Ski-Doo Snowmobile Buyer's Guide.

Book Description

Where did the words bungalow and assassin derive? What did nice mean in the Middle Ages? How were adder, anger, and umpire originally spelt? The answers can be found in this essential companion to any popular dictionary. With over 17,000 entries, this is the most authoritative and comprehensive guide to word origins available in paperback. Based on The Oxford Dictionary of English Etymology, the principal authority on the origin and development of English words, it contains a wealth of information about our language and its history.

Customer Reviews:

Perfect for the nonscholar.......2004-02-15

I agree with the earlier reviewers that this isn't the most thorough etymological dictionary available. But let's face it: most of us don't need weightier and more expensive resources than this one. In the ten years that I've owned the ODEE, I've used it hundreds of times, and only occasionally have I found it wanting. As someone who does a good bit of scriptural exegesis, I generally turn to the ODEE before dragging out the Greek lexicon or Latin dictionary. It can usually point me in the direction I need to go. A wonderful resource that should be on the shelf of anyone who loves books and words, especially since our fastfood culture has bred so much forgetfulness of the deep meaning of words.

Great, portable and does the job.......2000-06-19

I respect the reviews that this is by no means the last word in word origins. However, I have gotten more use out of this book than the other 5 dictionaries behind simply because I can bring it everywhere. Though some may find this a bit odd, I basically bring it on vacation as a second book -- especially in Europe where questions about them seem to crop up. So many more words will get hunted with this book because it will be handy when you need it.

A Little Too Concise to be Useful.......2000-04-05

Perhaps the main use of etymology references is to learn about words and how they have evolved into current usage. A good etymology reference like the Chambers / Barnhart will track the history of a word right back to its Proto-IndoEuropean roots. This is also what the Onions Oxford Etymology does. Now it is clear the Oxford didn't want to cannibalize sales of its classic Etymology Dictionary which defines about 25,000 words. This concise Etymology is a very large selection from the full Oxford, updated with some materials from the 2nd OED. What is missing in many of the etymologies is the word's full story. So, we have a good book with a decent collection that is not quite complete. IF you're looking for a good etymology at the same price, you'd do better with Ayto's Dictionary of Word Origins - only 8,000 words but provides a much more thorough treatment. If you're willing to splurge, the best etymology is the Barnhart, re-released as the Chambers Dictionary of Etymology. You get over 60,000 words, drawn almost entirely from US sources.

There are better Etymologies Available.......2000-04-03

First, this Concise Etymology from Oxford updates the mid-1960s Oxford Dictionary of Etymology, edited by Onions ... by adding some new etymologies from the Second OED. However, Oxford clearly did not want to compete with Onion's tome, which is still available in hardcover. So, what to do? This Concise edition, like the full edtion, defines about 17,000 words. The sacrifice you make getting this work is in the actual etymologies themselves. They simply are not thorough or exhaustive. In this Concise Edition, most word origins are not pushed all the way back to their Indo-European or Proto-Indo European roots - something that the similarly priced John Ayto's work does quite well (though with only 8,000 words). If I were to buy only one etymology dictionary, this would not be my first choice. On a budget I would get Ayto's and learn more about fewer words - and for a few dollars more I would recommend the Chamber's/Barnhart - which is far more scholarly and simply more interesting.

The Concise Oxford Dictionary of English Place-Names

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The Concise Oxford Dictionary of English Place-Names

Manufacturer: Oxford University Press, USA
ProductGroup: Book
Binding: Hardcover

English (All) | Dictionaries & Thesauruses | Reference | Subjects | Books

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General | Reference | Subjects | Books
ASIN: 0198691033

THE CONCISE OXFORD DICTIONARY OF ENGLISH ETYMOLOGY

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THE CONCISE OXFORD DICTIONARY OF ENGLISH ETYMOLOGY
HOAD
Manufacturer: OXFORD
ProductGroup: Book
Binding: Paperback

Etymology | Words & Language | Reference | Subjects | Books
ASIN: B000S5FRDM

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The Concise Oxford Dictionary of English Etymology
T. F. Hoad
Manufacturer: Oxford University Press
ProductGroup: Book
Binding: Hardcover

Etymology | Words & Language | Reference | Subjects | Books
ASIN: B000P1ZR3O

The Concise Oxford Dictionary of English Etymology (Oxford Paperback Reference)

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The Concise Oxford Dictionary of English Etymology (Oxford Paperback Reference)
T. F. Hoad
Manufacturer: Oxford University Press, USA
ProductGroup: Book
Binding: Paperback

Etymology | Words & Language | Reference | Subjects | Books
ASIN: B000OK73W4

Book Description

This beautifully illustrated book is the first to explore the history of Chinese dress and the fascinating ways that Western and Chinese fashion have influenced one another. The authors trace the evolution of Chinese clothing from dragon robes and lotus shoes in the imperial era to such attire as the cheongsam and "Mao suit" that symbolize a modern Chinese identity.

Customer Reviews:

MIND BLOWING,REVELOUTIONARY AND VERY VERY SEXY.......1999-10-07

China chic is a truly haunting experienc

Smashingly beautiful book. New twist on Chinese fashion........1999-08-05

*China Chic* is a gorgeous yet scholarly study of the interchange between China and the West in terms of fashion. Among the many intriguing points is how women of Chinese ancestry in the West are now influencing fashion design in new, very sophisticated ways. The combined efforts of Valerie Steele, John Major, and others make this book a must-read, just as the exhibit at the Fashion Institute in spring 1999 that this book used as a basis was a must-see for anyone who cares about fashion, culture and dress, or Chinese history.

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China Chic: East Meets West
V Steele
Manufacturer: Yale University Press
ProductGroup: Book
Binding: Paperback
ASIN: B000OSHARY

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