A hierarchical model for aging

We present a one dimensional model for diffusion on a hierarchical tree structure. It is shown that this model exhibits aging phenomena although no disorder is present. The origin of aging in this model is therefore the hierarchical structure of phase space.Comment: 10 pages LaTeX, 4 postscript-figures include

'This Thorniest of Problems':School Sex Education Policy in Scotland, 1939-80

In recent years, the history of sex education policy in twentieth-century Britain, and the sexual discourses it both reflects and reinforces, has attracted increasing attention from a range of disciplines within the humanities and social sciences. Yet, research has primarily focused either on the early decades of the century or on the abrasive social politics of sex education since 1980. There is a dearth of material addressing the intervening years. Moreover, little research has been devoted to the Scottish experience, despite Scotland’s distinctive traditions of education and law, as well as arguably a distinctive sexual culture. Drawing on a wide range of governmental archives, this article seeks to rectify these omissions by exploring the impulses and constraints that shaped Scottish school sex education policy in the period 1950-80. First, it examines the nature of the debate surrounding the issue prior to the Second World War. Secondly, it charts the reappraisal of policy in wartime and immediate post-war years in response to the perceived breakdown in moral and sexual standards among the young. Thereafter, the article examines the devolvement of responsibility for school sex education in the 1950s and 1960s to traditional purity and social hygiene organizations-the Alliance-Scottish Council and the Scottish Council for Health Education. The demise of such organizations, and the often conflicting and ineffectual efforts of the Scottish Education Department and Scottish Home and Health Department to address the sex educational needs of a more ‘permissive’ youth culture in the late 1960s and 1970s are then explored. Finally, the implications of the study for an understanding of the relationship of the State to sexual issues in later twentieth-century Scotland are reviewed

Primary and secondary markets

The analytical starting point determines the course of a theoretical investigation and ultimately the productiveness of an approach. The classics took production and accumulation as their point of departure, the neoclassics exchange. Exchange implies behavioral assumptions and notions like rationality, optimization, and equilibrium. It is widely recognized that this approach has led into a cul-de-sac. To change a theory means to change its premises or, in Keynes’s words, to ‘throw over’ the axioms. The present paper swaps the standard behavioral axioms for structural axioms and applies the latter to the analysis of the emergence of secondary markets from the flow part of the economy. Real and nominal residuals at first give rise to the accumulation of the stock of money and the stock of commodities. These stocks constitute the demand and supply side of secondary markets. The pricing in these markets is different from the pricing in the primary markets. Realized appreciation in the secondary markets is different from income or profit. To treat primary and secondary markets alike is therefore a category mistake. Vice versa, to take a set of objective propositions as analytical starting point yields a comprehensive and consistent theory of market exchange and valuation