Ishtiaq P. Mahmood

Learn More
This paper argues that business groups in emerging economies exert dual effects on innovation. While groups encourage innovation by providing institutional infrastructures, groups also discourage innovation by creating entry barriers for small and non-group firms and inhibiting the proliferation of new ideas. Using OLS and panel data estimation techniques,(More)
The effects of rhizobacteria, i.e. Pseudomonas fluorescens, Azotobacter chyroococcum and Azospirillum brasilense, alone and in combination with root symbionts, Rhizobium sp. and Glomus mosseae, on the growth of chickpea, Cicer arietinum, and reproduction of Meloidogyne jaranica were studied. When added alone G. mosseae was better at improving plant growth(More)
This research shows that alliance networks shape how firms respond to uncertaintyreducing information generated outside a network. Product awards signal the potential commercial success of the award-winning firms, which reduces the uncertainty of new R&D investment. Networks magnify or diminish a firm’s R&D response to the market signals, depending on the(More)
While strategy researchers have devoted considerable attention to the role of firm-specific capabilities in the pursuit of competitive advantage, less attention has been directed at how firms obtain these capabilities from outside a firm’s boundaries. This study analyzes how firms’ network ties represent one important source of capability acquisition.(More)
Several studies in the social networks literature suggest that more central firms in a given network will be more innovative, but the literature not considered how variation in network density might affect any innovative benefits of centrality. This paper draws from evolutionary economics arguments to suggest that any benefits of centrality will decline as(More)
Business groups are a network form of multi-business firm that play central economic and technological roles in many emerging economies. We draw from the technology studies literature, complemented by concepts from studies of organizational networks, to investigate how equity, director, and operating ties between firms within groups shape their innovation(More)
This paper examines the effects of different types of cross border external linkages on innovation. Using Taiwan as the empirical setting, we examine how the effects of external linkages on innovation vary depending on the type of linkages (joint Venture, licensing, acquisition, etc.) as well as the type of innovation (radical versus incremental). Our(More)
Business groups are important sources of innovation in emerging economies, but there is substantial heterogeneity in the extent of innovative activity by groups, both across groups and over time. Variation in the density of intra-group buyer-supplier ties that are common linkages among group affiliates may help explain the heterogeneity. Buyer-supplier ties(More)