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What algorithms are tractable depends on the speed of the processor. Given the speed of digital computers, polynomial algorithms are considered tractable. But, a human can take several seconds to make one binary comparison between two pens. Given this slow speed, sublinear algorithms are considered tractable for an unaided human and this defines Simon's concept of bounded rationality.Humans make simplifications to solve the intractable consumer optimization problem. Consumers search for goods and services item-by-item, which greatly reduces the number of alternatives to consider. In addition, consumers have operators that can process a set in a single operation. Also, consumers budget by inc...
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It's about time we had a book like this. Michelle Bernard has a rare gift for putting in plain words extraordinarily effective and levelheaded ways to properly care for cats. Steering clear of faddish, dangerous trends-and dissecting the oodles of misinformation that has regrettably become the norm in mainstream advice on animal nutrition-she shines most conspicuously on the issue of a proper feline diet. By giving the reader a common-sense, straightforward strategy for preparing a diet that is based solely on the nutritional requirements of true carnivores, her book is a must-have for anyone committed to building and maintaining glowing good health for cats. Bernard's work on all aspects of...
The art and science of truly successful homeopathic medicine.With the recent resurgence in the practice of homeopathy -- whether practiced alone or as a complement to other types of medicine -- comes an unprecedented demand for well-educated, highly trained practitioners. What type of education will lead to true success? Can the art of homeopathy be taught alongside the scientific concepts? Generations of homeopaths have mastered such concepts as homeoprophylaxis, genus epidemicus, and constitution, but only the truly successful practitioners have achieved a level of understanding far beyond simply dealing with patients. In this unique book, homeopath Chris Kurz offers a highly effective -- ...
This volume is the outgrowth of a workshop held in October, 2000 at the Institute for Theoretical Atomic and Molecular Physics at the Harvard- Smithsonian Center for Astrophysics in Cambridge, MA. The aim of this book (similar in theme to the workshop) is to present an overview of new directions in antimatter physics and chemistry research. The emphasis is on positron and positronium interactions both with themselves and with ordinary matter. The timeliness of this subject comes from several considerations. New concepts for intense positron sources and the development of positron accumulators and trap-based positron beams provide qualitatively new experimental capabilities. On the theoretica...
Art of the Harley-Davidson Motorcycle pulls together the best of David Blattel's Harley-Davidson portraiture. This deluxe edition sports a special leather-look cover, poster-sized gatefolds, and frameable garage art in an internal envelope.
Vols. 12-20 include: Cigar Maker's International Union of America. Annual financial report (title varies slightly), 1886-1894. (From 1886-1891 issued as a numbered section of the periodical.).
Now in paperback: a #1 New York Times–bestselling author’s gripping chronicle of “two doctors . . . bringing light to those in darkness” (Time) Second Suns is the unforgettable true story of two very different doctors with a common mission: to rid the world of preventable blindness. Dr. Geoffrey Tabin was the high-achieving “bad boy” of his class at Harvard Medical School. Dr. Sanduk Ruit grew up in a remote village in the Himalayas, where cataract blindness—easily curable in modern hospitals—amounts to an epidemic. Together, they pioneered a new surgical method, by which they have restored sight to over 100,000 people—all for about $20 per operation. Master storyteller David Oliver Relin brings the doctors’ work to vivid life through poignant portraits of their patients, from old men who can once again walk treacherous mountain trails, to children who can finally see their mothers’ faces. The Himalayan Cataract Project is changing the world—one pair of eyes at a time.
This handbook presents a state-of-the-art overview of dual language bilingual education (DLBE) research, programs, pedagogy, and practice. Organized around four sections—theoretical foundations; key issues and trends; school-based practices; and teacher and administrator preparation—the volume comprehensively addresses major and emerging topics in the field. With contributions from expert scholars, the handbook highlights programs that honor the assets of language-minoritized and marginalized students and provides empirically grounded guidance for asset-based instruction. Chapters cover historical and policy considerations, leadership, family relations, professional development, community partnerships, race, class, gender, and more. Synthesizing major issues, discussing central themes and advancing policy and practice, this handbook is a seminal volume and definitive reference text in bilingual/second language education.