To assess the effects of a firm's network of relations on innovation, this paper elaborates a theoretical framework that relates three aspects of a firm's ego network—direct ties, indirect ties, an...

/pdf/collaboration-networks-structural-holes-and-innovation-a-43oz2jtxxk.pdf

Collaboration Networks, Structural Holes, and Innovation: A Longitudinal Study:

Fabio Arcangeli, Paul David, Frank Engelman, Christopher Freeman, Massimo Moggi, Richard Nelson, Luigi Orsenigo, Nathan Rosenberg, Michele Salvati, G. N. von Tunzelman, two anonymous referees, and the participants at the meeting of the Committee on Distribution, Growth, and Technical Progress of the Italian National Research Council (CNR), Rome, November 16, 1985, have helped with various redraftings. A particularly grateful acknowledgment is for the insightful and patient help of Moses Abramovitz. This work has been undertaken at the Science Policy Research Unit (SPRU), University of Sussex, as part of the research program of the Designated Research Centre, sponsored by the Economic and Social Research Council (ESRC). Earlier support to the research that led to this paper by the Italian National Research Council (CNR) is also gratefully acknowledged. The statistical research has been undertaken with the assistance of Stephano Brioschi, Ilaria Fornari, and Giovannu Prennushi.

https://www.jstor.org/stable/info/2726526

Sources, Procedures, and Microeconomic Effects of Innovation

Recent theories of economic growth, including Romer (1986), Porter (1989) and Jacobs (1969), have stressed the role of technological spillovers in generating growth. Because such knowledge spillovers are particularly effective in cities, where communication between people is more extensive, data on the growth of industries in different cities allows us to test some of these theories. Using a new data set on the growth of large industries in 170 U.S. cities between 1956 and 1987, we find that local competition and urban variety, but not regional specialization, encourage employment growth in industries. The evidence suggests that important knowledge spillovers might be between, rather than within industries, consistent with the theories of Jacobs (1969).

https://papers.ssrn.com/sol3/Delivery.cfm/nber_w3787.pdf?abstractid=258503&mirid=1

Growth in Cities

Recent theories of economic growth, including those of Romer, Porter, and Jacobs, have stressed the role of technological spillovers in generating growth. Because such knowledge spillovers are particularly effective in cities, where communication between people is more extensive, data on the growth of industries in different cities allow us to test some of these theories. Using a new data set on the growth of large industries in 170 U.S. cities between 1956 and 1987, we find that local competition and urban variety, but not regional specialization, encourage employment growth in industries. The evidence suggests that important knowledge spillovers might occur between rather than within industries, consistent with the theories of Jacobs.

A Historical Comparison of Resource-Based Theory and Five Schools of Thought Within Industrial Organization Economics: Do We Have a New Theory of the Firm?

Public concern has been rising about whether market forces are sufficient to ensure the optimal choice of quality of services. We examine a model in which unregulated competition leads to an underprovision of quality from a social perspective and then study the effects of price regulation. Although price floors sometimes have the expected effect of increasing the incentives to raise the quality of services, their imposition changes the nature of competitive behaviour in subtle ways and often changes the relative positions of firms in the market. We show that no price floor exists which will achieve the socially optimal quality choice and the only price floors that result in symmetric firm behaviour are those which involving an overinvestment in quality. We also examine the effects of imperfect consumer information about quality under various consumer learning processes and find that slow but plausible learning behavior can lead to an increase in quality. We also show that firms typically benefit from consumers' uncertainty about the quality of both their own good and their rival's. Informative advertising about the firm's or its rival's product is not in the firm's best interest.

Price Regulation and Quality of Service

Market structure and innovation revisited

Exclusion, externalities, and public goods

We have examined the optimal production of a consumer durable with the aid of a capital stock subject to deterioration. We assumed the durable was owned by the producer and its services rented; this is equivalent to assuming sale with perfect foresight and used good markets. If the firm has no more than modest initial endowments of productive capital and durable good, the deterioration of capital induces a hump-like profile of the stock of the durable product, with the top of the hump above the eventual steady state level. The rental price of the consumer durable, therefore, falls from its initial level to a low from which it ascends to its steady state value. This implication might be amenable to empirical testing. Among the possible extensions of this work might be an analysis of the relationship between market structure and the choice of durability along the lines of [7] with allowance for deterioration of the capital stock. Recent generalizations of the traditional model of capital accumulation to take into account obsolescence and maintenance, as in [19], [11] and [13], might also be applied to this model. Lastly, policy questions regarding the consequences of an investment credit tax addressed in [4] and [16] might also be investigated in the context of the model presented in this paper.

/pdf/optimal-capital-accumulation-and-durable-goods-production-2t00n61t71.pdf

Optimal capital accumulation and durable goods production

Market Structure and Innovations

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