Anthraquinone molecules self-assemble on a Cu(111) surface into a large two-dimensional honeycomb network (square root of 304 x square root of 304)R23 degrees with pore diameters of approximately 50 A. The spontaneous formation of a pattern containing pores roughly five times larger than the size of the constituent molecules is unprecedented. The network originates from a delicate balance betwe...

This paper looks at the link between inter-regional mobility, innovation and firms’ behavioural heterogeneity in their reliance on localised external sources of knowledge. By linking patent data (capturing inventors’ inter-regional mobility) with firm-level data (providing information on firms’ innovation inputs and behaviour) a robust identification strategy makes it possible to shed new light...

Everybody Needs Good Neighbours? Evidence from Students’ Outcomes in England We estimate the effect of neighbours’ characteristics and prior achievements on teenage students’ educational and behavioural outcomes using census data on several cohorts of secondary school students in England. Our research design is based on changes in neighbourhood composition caused explicitly by residential migra...

Unwilling or Unable? Spatial, Institutional and SocioEconomic Restrictions on Females' Labor Market Access We analyze the effects of regional structures on both females’ willingness to work and the probability of being employed for those willing to work. Special permission was granted to link regional data to individual respondents in the German Socio-Economic Panel (GSOEP). Results of a bivari...

An innovation-diffusion model was developed with agent-based modelling (ABM); the model is used to study technical innovation and its diffusion process in China. The results are as follows: only a small fraction of firms conduct independent product-innovation, and most firms prefer imitation and/or purchases; most of the innovative firms are located in the East; approximately three or four tech...

We use Second World War destruction in London as a natural experiment to provide evidence on neighborhood e ects. We use a newly-collected and remarkable dataset on thousands of locations within London that records wartime destruction and the economic and social characteristics of locations from the latenineteenth to late-twentieth centuries. We combine these data with a quantitative model of t...

Sectoral Shifts, Diversification and Regional Unemployment: Evidence from Local Labour Systems in Italy Using Local Labour Systems (LLSs) data, this work aims at assessing the effects of sectoral shifts and industry specialization patterns on regional unemployment in Italy over the years 2004-2008, when huge worker reallocation caused by changes in the international division of labour occurred....

STEM Graduates, Human Capital Externalities, and Wages in the U.S. Previous research suggests that the local stock of human capital creates positive externalities within local labor markets and plays an important role in regional economic development. However, there is still considerable uncertainty over what types of human capital are most important. Both national and local policymakers in the...

Immigration and the Neighborhood What impact does immigration have on neighborhood dynamics? Within metropolitan areas, we find that housing values have grown relatively more slowly in neighborhoods of immigrant settlement. We propose three nonexclusive explanations: changes in housing quality, reverse causality, or the hypothesis that natives find immigrant neighbors relatively less attractive...

This paper presents a simple two-period, dual economy model in which migration options may affect the informal financing of educational investments. When credit contracts are universally available and perfectly enforceable, spatially varied returns to human capital have no effect on educational investment patterns. But when financial markets are incomplete and informal mechanisms subject to imp...