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Food Webs and Niche Space
What is the minimum dimension of a niche space necessary to represent the overlaps among observed niches? This book presents a new technique for obtaining a partial answer to this elementary question about niche space. The author bases his technique on a relation between the combinatorial structure of food webs and the mathematical theory of interval graphs. Professor Cohen collects more than thirty food webs from the ecological literature and analyzes their statistical and combinatorial properties in detail. As a result, he is able to generalize: within habitats of a certain limited physical and temporal heterogeneity, the overlaps among niches, along their trophic (feeding) dimensions, can...
How Many People Can the Earth Support?
Discusses how many people the earth can support in terms of economic, physical, and environmental aspects.
Community Food Webs
Food webs hold a central place in ecology. They describe which organisms feed on which others in natural habitats. This book describes recently discovered empirical regularities in real food webs: it proposes a novel theory unifying many of these regularities, as well as extensive empirical data. After a general introduction, reviewing the empirical and theoretical discoveries about food webs, the second portion of the book shows that community food webs obey several striking phenomenological regularities. Some of these unify, regardless of habitat. Others differentiate, showing that habitat significantly influences structure. The third portion of the book presents a theoretical analysis of ...
I Swear
I Swear: The Meaning of an Oath looks at how taking an oath may impact the obligations of the oath taker, and the perceptions and expectations of those around him. The book begins with Aeschylus - "It is not the oath that makes us believe the man, but the man the oath." The author explores whether Aeschylus was correct through stories of diverse and varied individuals who took an oath - doctor, lawyer, priest, journalist, CIA director, "made man," and president, to name a few. Most of the time, people are able to keep their oath. But what happens when the decision to keep an oath may result in an injustice, or a situation where others are hurt? What do your oaths mean to you, and what do they mean to those around you? Do societal pressures allow one to break his oath? What does your moral compass tell you to do when violating your oath is somehow the "right" thing to do, however wrong it is, because you're violating it?
Comparisons of Stochastic Matrices with Applications in Information Theory, Statistics, Economics and Population
Some of the possible implications among these comparisons remain open questions. The results in this book establish a new field of investigation for both mathematicians and scientific users interested in the variations among multiple probability distributions.
Educating All Children
Experts illuminate the challenges of achieving universal basic and secondary education, discussing the importance and difficulties not only of expanding access to education and but also of improving the quality of education.
International Perspectives on the Goals of Universal Basic and Secondary Education
Although universal schooling has been adopted as a goal by international organizations, bilateral aid agencies, national governments, and non-profit organizations, little sustained international attention has been devoted to the purposes or goals of universal education. What is universal primary and secondary education intended to accomplish? This book, which grew out of a project of the American Academy of Arts & Sciences, offers views from Asia, Africa, Europe, North America and South America on the purposes of universal education while considering diverse cultures, religions, and professions. It is the first book in which renowned authors from around the world have proposed, considered, and debated goals of basic and secondary education, engaging in a constructive dialogue on one of the most pressing issues facing education today.
