8,975 research outputs found

    Classical and quantum behavior of the integrated density of states for a randomly perturbed lattice

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    The asymptotic behavior of the integrated density of states for a randomly perturbed lattice at the infimum of the spectrum is investigated. The leading term is determined when the decay of the single site potential is slow. The leading term depends only on the classical effect from the scalar potential. To the contrary, the quantum effect appears when the decay of the single site potential is fast. The corresponding leading term is estimated and the leading order is determined. In the multidimensional cases, the leading order varies in different ways from the known results in the Poisson case. The same problem is considered for the negative potential. These estimates are applied to investigate the long time asymptotics of Wiener integrals associated with the random potentials.Comment: 27 page

    Linked versus Non-linked Firms in Innovation: The Effects of Economies of Network in Agglomeration in East Asia

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    This paper proposes a new mechanism linking innovation and network in developing economies to detect explicit production and information linkages and investigates the testable implications of these linkages using survey data gathered from manufacturing firms in East Asia. We found that firms with more information linkages tend to innovate more, have a higher probability of introducing new goods, introducing new goods to new markets using new technologies, and finding new partners located in remote areas. We also found that firms that dispatched engineers to customers achieved more innovations than firms that did not. These findings support the hypothesis that production linkages and faceâ€toâ€face communication encourage product and process innovation.Southeast Asia, East Asia, Technological innovations, Network, Communication, Business enterprises, Engineer Mobility, Innovation, Linkages

    Innovation in Linked and Non-linked Firms: Effects of Variety of Linkages in East Asia

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    This paper proposes a new mechanism linking innovation and network in developing economies to detect explicit production and information linkages and investigates the testable implications of these linkages using survey data gathered from manufacturing firms in Indonesia, Thailand, the Philippines, and Vietnam. In-house R&D activities, internal resources, and linkages with local firms and foreign firms play a role in reducing the costs of product and process innovation and search costs for finding new suppliers and customers. We found that firms with more varieties of information linkages achieve more types of innovations. Complementarities between internal and external sources of knowledge are also found.- innovation, linkages, sources of knowledge, dissimilarity, complementarities

    Spatial Architecture of the Production Networks in Southeast Asia

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    The main purpose of this paper is to provide empirical evidence on the inter-firm production networks in Southeast Asian developing economies. Using firm-level data obtained from a questionnaire survey of manufacturing firms in Indonesia, the Philippines, Thailand, and Vietnam in 2008, this paper presents the regional distribution of main customers and suppliers and their geographical proximity. Firm-level capabilities and transaction costs associated with specific inter-firm relationships would influence the distances between customers and suppliers. Ordered logistic estimations are carried out to examine factors affecting the spatial architecture of the production networks in the region.

    Innovation in Linked and Non-linked Firms: Effects of Variety of Linkages in East Asia

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    This paper proposes a new mechanism linking innovation and networks in developing economies to detect explicit production and information linkages. It investigates the testable implications of these linkages using survey data gathered from manufacturing firms in Indonesia, Thailand, the Philippines, and Vietnam. In-house R&D activities, internal resources, and linkages with local and foreign firms play a role in reducing the costs of product-and process innovation, and the search costs of finding new suppliers and customers. We found that firms with more variety of information linkages achieve more types of innovation. Complementarities between internal and external sources of knowledge are also found.

    Impacts of Incoming Knowledge on Product Innovation: Technology Transfer in Auto-related Industries in Developing Economies

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    This paper studies two questions on the role of networked sources of knowledge influential to product innovation. First: What is the extent of technology transferred through vertical linkages and public-private alliances, including university-industry linkages, in the phase of product improvement and development? Second: What types of knowledge are transferred from external technology sources? In a sample of ASEAN firms’ self-reported partner data restricted to automotive related industries, we found that direct linkages with MNC customers in foreign countries resulted in a lower propensity of product innovation. Indeed, incoming knowledge from MNC customers relating to the management of quality of existing products especially explained the lower propensity of product innovation. We also found that production linkages with MNC suppliers in foreign countries resulted in a higher propensity of product innovation. Incoming knowledge from MNC suppliers about quality controls explained a lower propensity of product innovation. These findings empirically indicate that networked sources of knowledge have a significant influence trade-off between maintaining existing operations and developing new products. The impacts of public-private alliances on innovation are sizable compared with the impacts of vertical linkages. Public-private alliances and vertical linkages offer knowledge with different effects on product innovation.
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