We investigate the influence of heteroepitaxially grown Ge on the thermal dewetting and agglomeration of the Si(0 0 1) template layer in ultrathin silicon-on-insulator (SOI). We show that increasing Ge coverage gradually destroys the long-range ordering of 3D nanocrystals along the 〈1 3 0〉 directions and the 3D nanocrystal shape anisotropy that are observed in the dewetting and agglomeration of...

Large eddy simulation and a discrete element method are applied to study the flow, particle dispersion and agglomeration in a horizontal channel. The particle-particle interaction model is based on the Hertz-Mindlin approach with Johnson-KendallRoberts cohesion to allow the simulation of Van der Waals forces in a dry air flow. The influence of different particle surface energies on agglomeratio...

The paper considers the location of two industries in two countries. Both industries are imperfectly competitive, producing goods for final consumption and use as intermediates. Intermediate usage creates cost and demand linkages between firms, encouraging industrial agglomeration. With high trade barriers each industry operates in both locations in order to supply final consumers. At lower tra...

This paper studies the impact of trade costs reduction on geographical concentration in the presence of firm heterogeneity and overhead type of export fixed costs. Firm heterogeneity with the export fixed costs hampers full agglomeration through weakening the forward and backward linkages and fortifying the market crowding effect. Rather than catastrophic agglomeration that the standard new eco...

Firms and workers are much more productive in large and dense urban environments. There is substantial evidence of such agglomeration economies based on three aproaches. First, on a clustering of production beyond what can be explained by chance or comparative advantage. Second, on spatial patterns in wages and rents. Third, on systematic variations in productivity with the urban environment. H...

The paper estimates agglomeration e!ects for France, Germany, Italy, Spain, and the UK. Estimation takes into account endogeneity of the spatial distribution of employment and spatial "xed e!ects. Empirical results suggest that agglomeration e!ects in these European countries are only slightly smaller than agglomeration e!ects in the US: the estimated elasticity of (average) labor productivity ...

The regional economy and the regional logistics are interdependent unity, the coordinated development of the two aspects have important significance on the ascension of regional overall competitiveness. With the development of the central region strategy step by step, Wuhan urban agglomeration has good economic environment for the developing of regional logistics. Since the 11th Five-year Devel...

Economies of agglomeration are central to the understanding of the emergence of industrial clustering. However, existing models that incorporate such agglomeration economies have been largely neglecting the vast amount of empirical evidence on inter-sectoral differences in the patterns of industrial concentration. In this paper, we propose a baseline model of firm location in presence of dynami...

Countries compete for new FDI investment, whereas stocks of FDI generate agglomeration benefits and are potentially subject to extortionary taxation. We study the interaction between these aspects in a simple vintage capital framework with discrete time and an infinite horizon, focussing on Markov perfect equilibrium. We show that the equilibrium taxation destabilizes agglomeration advantages. ...

Policy for forming an industrial cluster, or industrial cluster policy, plays an important role in developing a region in East Asia. Industrial cluster policy is followed not only in Japan by the Ministry of Economy, Trade, and Industry, but also in most countries in East Asia such as Malaysia and Singapore. Silicon Valley in the US and Bangalore in India are well-known success stories of devel...