Search results

We use a combination of continuum and car-following models to explore the potential impact of speed-controls on (i) decreasing travel times at times of congested flow; and (ii) increasing the safety of motorway flow approaching the site of an accident.

This chapter revisits and extends the multiple-source, multiple-object theory of legitimacy in organizations. It introduces the idea of legitimized regimes and uses it to extend the theory’s range beyond the usual focus on power and domination. The theory describes mechanisms that: (1) establish the legitimacy of new or contested regimes; and (2) facilitate the spread of legitimacy to structures and processes that lie outside organizational boundaries. The chapter uses current affirmative action debates to illustrate the mechanisms under study. The work concludes with a summary that includes discussion of prospects for research on extensions of the multiple-source, multiple-object theory.

The experimental parliamentary subsidy on knights' fees and freehold incomes from lands and rents of 1431 was the only English direct lay tax of the Middle Ages which broke down. As such, this subsidy has a clear historiographical significance, yet previous scholars have tended to overlook it on the grounds that parliament's annulment act of 1432 mandated the destruction of all fiscal administrative evidence. Many county assessments from 1431–1432 do, however, survive and are examined for the first time in this article as part of a detailed assessment of the fiscal and administrative context of the knights' fees and incomes tax. This impost constituted a royal response to excess expenditures associated with Henry VI's “Coronation Expedition” of 1429–1431, the scale of which marked a decisive break from the fiscal-military strategy of the 1420s. Widespread confusion regarding whether taxpayers ought to pay the feudal or the non-feudal component of the 1431 subsidy characterized its botched administration. Industrial scale under-assessment, moreover, emerged as a serious problem. Officials' attempts to provide a measure of fiscal compensation by unlawfully double-assessing many taxpayers served to increase administrative confusion and resulted in parliament's annulment act of 1432. This had serious consequences for the crown's finances, since the regime was saddled with budgetary and debt problems which would ultimately undermine the solvency of the Lancastrian state.

This paper suggests that a corporate-environmental food regime is emerging as part of a larger restructuring of capitalism. Like past food regimes, it reflects specific social and political compromises, which I interpret through the social movement concept of interpretive frames. The diasporic-colonial food regime of 1870–1914 grew up in response to working class movements in Europe, and created a historically unprecedent class of commercial family farmers. When world markets collapsed, those farmers entered into new alliances, including one that led to the mercantile-industrial food regime of 1947–1973. Lineaments of a new food regime based on quality audited supply chains seems to be emerging in the space opened by impasse in international negotiations over food standards. Led by food retailers, agrofood corporations are selectively appropriating demands of environmental, food safety, animal welfare, fair trade, and other social movements that arose in the interstices of the second food regime. If it consolidates, the new food regime promises to shift the historical balance between public and private regulation, and to widen the gap between privileged and poor consumers as it deepens commodification and marginalizes existing peasants. Social movements are already regrouping and consolidation of the regime remains uncertain.

In this reply, we respond to a series of substantive comments on our work by both Madhavan and Walker. In our response to Madhavan’s comments, we consider three accounts – “weak,” “semi-strong” and “strong” – that clarify how our model “explains” and offers insights that can emerge from our modeling strategy. We also explore ways in which our explanatory strategy might be extended in light of his critique. In our response to Walker’s comments, we adopt the “semi-strong” thesis, which admits variation in network-generating mechanisms, while also recognizing that information needs to be distributed and shared in order for many types of networks to function.

Certain elements of Hayek’s work are prominent precursors to the modern field of complex adaptive systems, including his ideas on spontaneous order, his focus on market processes, his contrast between designing and gardening, and his own framing of complex systems. Conceptually, he was well ahead of his time, prescient in his formulation of novel ways to think about economies and societies. Technically, the fact that he did not mathematically formalize most of the notions he developed makes his insights hard to incorporate unambiguously into models. However, because so much of his work is divorced from the simplistic models proffered by early mathematical economics, it stands as fertile ground for complex systems researchers today. I suggest that Austrian economists can create a progressive research program by building models of these Hayekian ideas, and thereby gain traction within the economics profession. Instead of mathematical models the suite of techniques and tools known as agent-based computing seems particularly well-suited to addressing traditional Austrian topics like money, business cycles, coordination, market processes, and so on, while staying faithful to the methodological individualism and bottom-up perspective that underpin the entire school of thought.