Search

This paper investigates the impact of the inbound and outbound open innovation on innovative performance in firms of industrial clusters. We argue that firms with higher levels of absorptive capacity manage external knowledge flows more efficiently and stimulate innovative outcomes. And in a cluster with more trust between the firms, firms will achieve higher innovative performance through outbound open innovation. What’s more, we discuss open innovation in firms of labor-intensive, capital-intensive and technology-intensive industrial clusters, respectively. We argue that sourcing and revealing are more popular than acquiring and selling in firms of labor-intensive clusters. However, acquiring and sourcing are both very popular while revealing is more popular than selling in firms of capital-intensive and technology-intensive clusters.

On the basis of literature review, this paper first discusses the definition, background and research foundations of open innovation. On this basis, we study the types(the inside-out, the outside-in and the coupled process), specific forms and capability requirements of open innovation in depth and look for the logic relationship among them. We also summarize the implication for theory and practice. The paper ends with charting several promising areas for future research.

This paper reviews the definition of innovative enterprises, innovative clusters and innovation resources. Then it develops four mechanisms about the impact of innovative enterprises to innovative clusters on the agglomeration of innovative resources. It also analyzes four pathways for innovative enterprises to affect the diffusion of innovative resources. Finally, it proposes three policy recommendations to help to foster the development of innovative clusters.

A two-leg S = 1/2 spin ladder with ferromagnetic rung coupling is investigated to reveal the phase transition between the Haldane and columnar dimer phase. The elastic lattice with the elastic force K is introduced into the system, which induces unstable spin chains towards the spontaneous dimerization. When the rung coupling is strong enough, the dimerization along the legs is suppressed and the spin ladder undergoes a phase transition. The dimerization amplitude is calculated self-consistently by the density-matrix renormalization group method. To determine the phase transition boundary, the spin gap, the columnar dimer order parameter and the block-block entanglement entropy are calculated. Our results show that the phase boundary between the columnar dimer phase and Haldane phase follows the power law Jt ~ K−α.