This paper explores the ways in which resource limitations influence the nature of perceptual and cognitive processes. A framework is developed that allows early visual processing to be analyzed in terms of these limitations. In this approach, there is no one ``best'' system for any visual process. Rather, a spectrum of systems exists, differing in the particular trade-offs made between performance and resource requirements.

Drawing on conceptual tools from philosophical bioethics, economics, and materialist feminism, we advocate viewing transnational commercial surrogacy as labor and consider what it means to compensate women for this work. We find two distinct but interrelated concerns emerge in our discussion of wages for surrogates: how to value and compensate for social reproduction, and how to establish a fair wage for surrogates. We explore limitations of minimum wage policy in addressing the undervaluation of biological and emotional labor in the transnational (...) commercial surrogacy industry. We argue that subsidization is a superior method of addressing at least one cause of undervaluation. (shrink)

A significant proportion of conservationists' work is directed towards efforts to save disappearing species. This relies upon the belief that species extinction is undesirable. When justifications are offered for this belief, they very often rest upon the assumption that extinction brought about by humans is different in kind from other forms of extinction. This paper examines this assumption and reveals that there is indeed good reason to suppose current anthropogenic extinctions to be different in kind from extinctions brought about at (...) other times or by other factors. Having considered – and rejected – quantity and rate of extinction as useful distinguishing factors, four alternative arguments are offered, each identifying a way in which anthropogenic extinction is significantly different from other forms of extinction, even mass extinction: (1) Humans are a different kind of natural cause from other causes of extinction; (2) Extinctions brought about by humans are uniquely persistent; (3) Anthropogenic extinctions are effectively random whereas past mass extinctions are rule-bound; (4) The impact of the current anthropogenic extinction event differs from the impact of other extinction events of the past, such that future recovery may not follow past patterns. Together, these four arguments suggest that the present-day extinction event brought about by humans may be unprecedented and that we cannot clearly extrapolate from past to present recovery from extinctions. Although insufficient as justification for the claim that present-day extinctions are undesirable, the arguments provide some ammunition for conservationists' conviction that species extinction – in which humans play an accelerating role – ought to be prevented. (shrink)

Feminist Care Ethics has much to offer in an analysis of the international migration of (largely female) care workers. This paper argues, however, that Joan Tronto’s analysis of this international care regime is incomplete insofar as it overlooks the ways in which the current global care market is progressive for the workers and the significant harms this market is inflicting on care receivers in source countries. In order for Feminist Care Ethics to fulfill its potential, it must be developed beyond (...) a visionary tool for revaluing care—it must also produce analytic tools for evaluating real alternatives under pressing, real-time constraints. (shrink)

Anderson-Shaw, Baslet, and Villano (2010) have rightfully pointed out the need for a more systematic approach in diagnosing and communicating to patients the effects of diseases and treatments on t...

This volume presents new texts of Cicero's dialogues on political philosophy, De Re Publica and De Legibus, together with corrected versions of the editor's previously published editions of Cato Maior de Senectute and Laelius de Amicitia. The texts are based on a full reconsideration of the manuscript evidence and are presented in a clear and readable form.