The Geological Society of America


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Patriot-improvers: 1743-1768


Book Description

When Benjamin Franklin adopted John Bartram's 1739 idea of bringing together the "virtuosi" of the colonies to promote inquiries into "natural secrets, arts and syances," the result was, in 1743, the founding of the American Philosophical Society. Bell records the early years of the Society through sketches of its first members, those elected between 1743 and 1769. This volume includes biographies of some of the Society's best known members such as Franklin, David Rittenhouse, John Bartram, Benjamin Rush, John Dickinson, Thomas Hopkinson and many lesser known merchants, artisans, farmers, physicians, lawyers and clergymen with familiar surnames such as Biddle, Colden, and Morris. Illustrations.







Gold: How it Shaped History


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Gold is not what we think. It is usually discussed in the context of wealth and art but this book has a broader subject, so fundamental that it has been largely unremarked. Informed by a mass of recent discoveries and a South American indigenous perspective, it offers a new way of understanding the history of civilization. Gold has been coinage, treasure and adornment. But it has been much more, as the hidden driver of wars and revolutions, the rise and fall of empires and the transformation of societies. As the sun traveled east to west across the sky, gold, incorruptible and corrupting, flowed west to east, hand to hand across the world. That flow has brought empires to grow and collapse and driven plunder, conquest and colonization. It brought about wars and revolutions, empowered new forms of arts and science and created the capitalist consumer economy that dominates us now. All the gold people ever shaped still exists, shining as new; it can be mislaid but never decays. Right from its first appearance on the west shore of the Black Sea, long before the rise of Egypt and Mesopotamia, gold crowned the first proto-king. Ever since, it has been regarded as value incarnate with transcendental power. The quantity we take has been increasing steadily for 6,500 years. Now extraction accelerates. Our gold mountain has doubled in the last fifty years. Yet its price increases faster. While the quantity doubled, its buying power multiplied by six. What does gold do that makes us want it so much? As Alan Ereira reveals in this skilfully woven narrative, gold is the hidden actor that shapes our story.




QRD-RLS Adaptive Filtering


Book Description

I feel very honoured to have been asked to write a brief foreword for this book on QRD-RLS Adaptive Filtering–asubjectwhichhas been close to my heart for many years. The book is well written and very timely – I look forward personally to seeing it in print. The editor is to be congratulated on assembling such a highly esteemed team of contributing authors able to span the broad range of topics and concepts which underpin this subject. In many respects, and for reasons well expounded by the authors, the LMS al- rithm has reigned supreme since its inception, as the algorithm of choice for prac- cal applications of adaptive ltering. However, as a result of the relentless advances in electronic technology, the demand for stable and ef cient RLS algorithms is growing rapidly – not just because the higher computational load is no longer such a serious barrier, but also because the technological pull has grown much stronger in the modern commercial world of 3G mobile communications, cognitive radio, high speed imagery, and so on.