The duality of world cities and firms: comparing networks,hierarchies, and inequalities in the global economy

Much of the research on globalization conceives of the global economy as structured by networks among places, while separately organizational research has examined the role of networks among firms in structuring competition, collaboration, and cooperation. In both cases, position and centrality within the network confers certain advantages and disadvantages, the distribution of which defines a hierarchy. In this article, I explore the idea of dual networks of world cities and firms, then use Breiger's approach to define two such networks: one among 313 world cities, another among 100 advanced producer service firms. Comparison of the degree of inequality in the hierarchies implied by these networks suggest that world city hierarchies are steeper than firm hierarchies (that is there is greater inequality among cities). Thus, even under conditions of footloose global capitalism, place still matters: where a producer is located has more impact than who provides support services.     

Changes in functional limitation and survival among older Taiwanese, 1993, 1996, and 1999

Using data from the Survey of Health and Living Status of the Elderly in Taiwan, we investigate changes in difficulties in walking and climbing stairs, tasks that represent basic lower-body movements less likely to be influenced by changes in environment and social roles than are activities and instrumental activities of daily living. Results are shown for unadjusted prevalence rates and rates adjusted for changes in population composition. The findings indicate that Taiwan does not appear to be experiencing the improvements in functioning witnessed recently in the United States. Prevalence of functional limitation increased between 1993 and 1996 and between 1996 and 1999. One possible reason is the change in old-age survival, which appears to have benefited those who have functional limitations, especially in a severe form. The Universal Health Insurance programme, established in 1995, may have increased access to care and thus the survival of those in poorest health.     

DETERMINANTS OF REGIONAL MIGRATION BY MANUFACTURING FIRMS

Economists have produced a sizable literature examining the role of labor migration in restoring wage and price equilibria among dispersed markets. A much smaller literature addresses another dimension of mobility, regional migration of entrepreneurs and firms. In this study we examine a model of the firm's decision to migrate, utilizing the Duns Market Identifiers data file. The model consists in part of an equation describing the decision to migrate, in order to determine the extent to which measured characteristics of the firm's environment explain firm migration. Additional equations in the model explain particular outcomes of migration: the growth in sales during a fixed interval after a move and the corresponding growth of employment.