The ‘light touch’ of the Black Death in the Southern Netherlands: an urban trick?

Although the fanciful notion that the Black Death bypassed the Low Countries has long been rejected, nevertheless a persistent view remains that the Low Countries experienced only a ‘light touch’ of the plague when placed in a broader European perspective, and recovered quickly and fully. However, in this article an array of dispersed sources for the Southern Netherlands together with a new mortmain accounts database for Hainaut show that the Black Death was severe, perhaps no less severe than other parts of western Europe; that serious plagues continued throughout the fourteenth and fifteenth centuries; and that the Black Death and recurring plagues spread over vast territories—including the countryside. The previous conception of a ‘light touch’ of plague in the Low Countries was created by the overprivileging of particular urban sources, and a failure to account for the rapid replenishment of cities via inward migration, which obscured demographic decimation. We suggest that the population of the Low Countries may not have recovered faster than other parts of western Europe but instead experienced a greater degree of post‐plague rural–urban migration.     

A conditional version of working's model

Working's (1943) model is shown to imply conditional Engel curves of the Working form when the income elasticity of demand for the group of goods as a whole is about unity.     

分析“分析美学史”的价值——序刘悦笛的《分析美学史》

作为对分析哲学的令人欣喜的贡献,刘悦笛的《分析美学史》,有助于形成对20世纪西方社会中的哲学美学的整体进程的基本理解。刘悦笛的文本正确估价了分析哲学对于美学研究的贡献,其所追踪的历史进程横亘了整个20世纪。这项任务主要是通过从美学家的贡献到美学主题的贡献的诸章节来共同实现的,每章在介绍与总结的部分都提出了作者自己对于分析美学重要性的解释和评价。刘悦笛所选择的美学家们对于这部分析美学简史而言是毫无疑义的,因为他们形成了在这场运动当中的最重要的形象。这种选择代表了一种系统的结构,这对于非西方读者们更深入地理解分析美学具有特别的重要价值。在对历史的精细的组织与敏锐的洞见当中,刘悦笛所提供的坚实的基础,对于学者和学生们而言就像一个坚实的平台,可以由此去探索那些在分析美学史上提出令人瞩目的理念的人们的作品。     

How Productive Are Economics and Finance PhDs?

This article analyses the research productivity of more than 200 individuals in academe with a PhD in economics and finance from (mostly) Australian universities. We find the number of publications accumulates linearly with experience, while citations increase exponentially, pointing to network effects. Panel regressions indicate: (1) the key role of experience in determining research outcomes; (2) the usual quadratic approach substantially under-estimates the role of diminishing returns to experience; (3) the university where an individual works is mostly unimportant for publications and citations. ‘Prime academic age’, when research has maximum impact, is attained about 11 years after the PhD.     

Evolutionary Stability in the Investment-Opportunism-Retaliation Game

Can economically efficient outcomes be obtained and sustained in the absence of externally enforced property rights? We study the evolutionary properties of a game that exhibits two well-defined Nash equilibria: one generates an inefficient outcome while the other set generates an efficient outcome supported by the potential for retaliation. Although standard forward-looking refinements eliminate the efficient equilibrium, neither equilibrium type satisfies strict evolutionary stability criteria. However, both types of equilibrium define strategies that are neutrally stable, which makes them vulnerable to drift in dynamic environments. We conduct computer simulation experiments in which players learn adaptively via a tournament selection mechanism called sophisticated experimentation. Our simulations demonstrate that while the system spends a disproportionately high proportion of time in the inefficient equilibrium set, the efficient equilibrium is pervasive as the system drifts back and forth between the equilibrium sets, never settling on one or the other.