London School of Economics and Political Science

About: London School of Economics and Political Science is a education organization based out in London, United Kingdom. It is known for research contribution in the topics: Population & Politics. The organization has 8759 authors who have published 35017 publications receiving 1436302 citations.

The Persistent myth of lost hegemony

Abstract: There is not much significant theorizing outside America and, within America, most recent theorizing has tended to become more abstract or else has falsely assumed that the United States is no longer a hegemonic power. But rather than criticize what has been done, I shall outline a different approach, identifying four major global structures—security, production, finance, and knowledge—within which states, corporate enterprises, and others operate. I conclude that America is dominant in all four structures. International studies therefore ought to develop a theory of empire which can be applied by U.S. policymakers, if these studies are to have any basis in reality and any practical use.

Dynamic Mean- Variance Asset Allocation

Abstract: We solve the dynamic mean-variance portfolio problem and derive its time-consistent solution using dynamic programming. Previous literature, in contrast, only determines either myopic or precommitment (committing to follow the initially optimal policy) solutions. We provide a fully analytical simple characterization of the dynamically optimal mean-variance portfolios within a general incomplete-market economy. We also identify a probability measure that incorporates intertemporal hedging demands and facilitates tractability. We illustrate this by easily computing portfolios explicitly under various stochastic investment opportunities. A calibration exercise shows that the mean variance hedging demands are economically significant.

Roads, Railroads, and Decentralization of Chinese Cities

Abstract: We investigate how the configurations of urban railroads and highways have influenced urban form in Chinese cities since 1990. Each radial highway displaces at least 5 percent of central city population to surrounding regions and ring roads displace an additional 20 percent. Each radial railroad displaces 26 percent of central city industrial GDP with ring roads displacing an additional 50 percent. Products with high weight-to-value ratios appear unresponsive to transport changes. However, products with medium and low weight-to-value ratios decentralize in response to radial railroads and ring roads. Historical transportation infrastructure provides identifying variation in more recent measures of infrastructure. J.E.L.: R4, O2

Children's Use of the Internet: Reflections on the Emerging Research Agenda

Abstract: As domestic access to the internet reaches the mass market in industrialized countries, this article identifies and evaluates the emerging research agenda, focusing particularly on children and young people. The nature of children's internet use generates public anxieties which both guide and undermine research, complicating the already challenging study of children within the privacy of the home. The body of empirical work reviewed is still small, but already key questions of academic and policy significance are being addressed regarding the opportunities and dangers of internet use. Such opportunities include communication, identity and participation, and education, learning and literacy; dangers arising from exclusion and the digital divide, and from certain kinds of use relating to inappropriate or undesirable contact, content and commercialism. In each of these domains, research strengths and gaps for future research are identified. The article concludes by noting areas of theoretical consensus and u...