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101.
102.
This paper studies the endogenous determination of telephone local calling areas. In many telephone systems, calls between
users in the same calling area are local; calls to outside the calling area are long distance and priced differently. We allow
the extension of this area to be treated as a strategic variable. We show the extension of the calling areas which maximizes
the carrier's profit to be the same which a welfare maximizing regulator would choose. Under a price cap regime in which prices
are required to meet an average price constraint, the firm manipulates strategically the extension of the local calling areas.
We end the paper by considering the case of a competitive market. In this case, again, the owner of the local loop extends
the local calling areas in response to decreased efficiency or increased competition of its competitors.
Received April 25, 2002; revised version received September 9, 2002
Published online: April 30, 2003 相似文献
103.
The main arguments in favor and against nominal and indexed debts are the incentive to default through inflation versus hedging against unforeseen shocks. We model and calibrate these arguments to assess their quantitative importance. We use a dynamic equilibrium model with tax distortion, government outlays uncertainty, and contingent-debt service. Our framework also recognizes that contingent debt can be associated with incentive problems and lack of commitment. Thus, the benefits of unexpected inflation are tempered by higher interest rates. We obtain that costs from inflation more than offset the benefits from reducing tax distortions. We further discuss sustainability of nominal debt in developing (volatile) countries. 相似文献
104.
Bowling alone but tweeting together: the evolution of human interaction in the social networking era
The objective of this paper is to theoretically analyze how human interaction may evolve in a world characterized by the explosion of online networking and other Web-mediated ways of building and nurturing relationships. The analysis shows that online networking yields a storage mechanism through which any individual contribution—e.g. a blog post, a comment, or a photo—is stored within a particular network and ready for virtual access by each member who connects to the network. When someone provides feedback, for example by commenting on a note, or by replying to a message, the interaction is finalized. These interactions are asynchronous, i.e. they allow individuals to relate in different moments, whenever they have time to. When the social environment is poor of participation opportunities and/or the pressure on time increases (for example due to the need to increase the working time), the stock of information and ties stored in the Internet can help individuals to defend their sociability. 相似文献
105.
Similarities and convergence in G-7 cycles 总被引:2,自引:0,他引:2
This paper examines the properties of G-7 cycles using a multicountry Bayesian panel VAR model with time variations, unit specific dynamics and cross-country interdependences. We demonstrate the presence of a significant world cycle and show that country specific indicators play a much smaller role. We detect differences across business cycle phases but, apart from an increase in synchronicity in the late 1990s, find little evidence of major structural changes. We also find no evidence of the existence of a Euro specific cycle or of its emergence in the late 1990s. 相似文献
106.
107.
Fabio D'Orlando 《International Advances in Economic Research》2004,10(2):113-122
The aim of New Keynesian theorists is to obtain Keynesian results on the basis of maximizing behavior. Accordingly, the New
Keynesian shirking models depict a world of fully rational maximizing agents where equilibrium unemployment is the main consequence
of the payment of efficiency wages. The problem is that oversimplified nature of most shirking models has until now prevented
a full investigation of the interdependence of unemployment, the effort supplied by workers and labor demand. This article
shows that the existence of this interdependence weakens the whole approach. In particular, when the unemployment rate is
considered a truly endogenous variable, the stability of the macroeconomic equilibrium is generally incompatible with the
existence of unemployment ascribed to the fact that firms pay efficiency wages. 相似文献
108.
109.
This paper studies the nature, sources and determinants of international patenting activity in Latin American countries (LACs)
and examines the extent to which LACs benefit from R&D that is performed in the G-5 countries (France, Germany, Japan, the
United Kingdom, and the United States). By using patents and patent citations from the United States Patent and Trademark
Office, we trace sectoral knowledge flows from G-5 countries to LACs. We study the impact of three channels of knowledge flows:
foreign R&D, patent citation-related spillovers, and face-to-face contact spillovers. Our results, based on data for Argentina,
Brazil, Chile, Colombia and Mexico, suggest that international knowledge spillovers from the G-5 countries were a significant
determinant of inventive activity during the period 1988–2003. We find that the stock of ideas produced in the USA has a strong
impact on the international patenting activity of these countries. Moreover, controlling for US-driven R&D effects, bilateral
patent citations and face-to-face relationships between inventors are both important additional mechanisms of knowledge transmission.
Some of our results suggest that the latter mechanism is more important than the former. 相似文献
110.
Abstract. We provide empirical evidence on the degree and characteristics of price stickiness in Austria by estimating the average frequency of price changes and the duration of price spells from a large dataset of individual price records collected for the computation of the Austrian consumer price index. The mean (median) duration of price spells in Austria amounts to 14 (11) months, but there is considerable heterogeneity across sectors and products. We find that price increases occur only slightly more often than price decreases. For both directions, the average magnitude of price changes is quite large (11% and 14%, respectively). The introduction of the euro cash in January 2002 led to more frequent but, on average, smaller price adjustments than usual. Estimating the probability of a price change in a panel probit model, we find a small but positive effect of the price spell duration on the incidence of price changes. Furthermore, product‐specific inflation, the size and the sign of the last price change and the period of the euro introduction significantly affect the probability of a price change. 相似文献