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151.
This paper analyses the effects of investment in information technologies (IT) in the financial sector using micro-data from a panel of 600 Italian banks over the period 1989–2000. Stochastic cost and profit functions are estimated allowing for individual banks' displacements from the best practice frontier and for non-neutral technological change. The results show that both cost and profit frontier shifts are strongly correlated with IT capital accumulation. Banks adopting IT capital-intensive techniques are also more efficient. On the whole, over the past decade IT capital-deepening contribution to total factor productivity growth of the Italian banking industry can be estimated in a range between 1.3 and 1.8 per cent per year. 相似文献
152.
We present a dynamic labour demand model where we evaluate the impact of employment regulations on permanent and temporary employment. We consider three different kinds of regulations, namely firing costs, hiring costs and a constraint on temporary contracts. These regulations differently affect the size and composition of employment. The theoretical results are interpreted and questioned on the basis of empirical evidence on the employment effects of the regulation reforms that occurred in the major European countries in the period 1983–1999. The empirical analysis is based on a new set of time‐varying indicators on permanent employment protection, fixed‐term contracts and temporary agency work regulations. We find evidence in support of the hypothesis that fixed‐term contracts have been effective stepping‐stones to permanent jobs during the period under observation. On the contrary, flexible temporary agency work regulations seem to induce a substitution of permanent with temporary contracts. 相似文献
153.
Unicity of the equilibrium in the unconstrained Hotelling model 总被引:1,自引:0,他引:1
Luca Lambertini 《Regional Science and Urban Economics》1997,27(6):785-798
A spatial duopoly is described, where firms are free to locate along the real axis, while consumers are distributed along a linear city of finite length. By adding a preplay stage where firms are required to set the timing of moves, one can analyze issues such as the endogenous choice of roles and the nature of differentiation at equilibrium. The distribution of roles is discussed both at the location stage and at the price stage. The game exhibits a unique subgame perfect equilibrium in pure strategies (up to a permutation), where firms play simultaneously in locations and sequentially in prices. Moreover, the results highlight the relevance of endogenous differentiation in altering some of the conclusions reached by previous literature. Finally, it turns out that the nature of differentiation may be heavily affected by the sequence of decisions. 相似文献
154.
155.
Export restraints in a model of trade with capital accumulation 总被引:1,自引:0,他引:1
This paper examines the impact of voluntary export restraints (VERs) in an international duopoly modeled as a differential game. With a Ramsey capital accumulation dynamics, the game admits multiple steady states, and a VER cannot be ‘voluntarily’ employed by the foreign firm in case of Cournot behavior in demand substitutes. Hence, the dynamic framework confirms the results of the VERs literature with static interaction in output levels. In the case of price behavior, the adoption of an export restraint may increase the profits of both firms if products are substitutes and the steady state is ‘market-driven’. However, contrary to the acquired wisdom based upon the static approach, the dynamic analysis also admits an equilibrium outcome, identified by the Ramsey golden rule, where the incentive to adopt a VER is ruled out, irrespective of whether firms are quantity- or price-setters. 相似文献
156.
Back to square one: Identification issues in DSGE models 总被引:1,自引:0,他引:1
We investigate identification issues in DSGE models and their consequences for parameter estimation and model evaluation when the objective function measures the distance between estimated and model-based impulse responses. Observational equivalence, partial and weak identification problems are widespread and typically produced by an ill-behaved mapping between the structural parameters and the coefficients of the solution. Different objective functions affect identification and small samples interact with parameters identification. Diagnostics to detect identification deficiencies are provided and applied to a widely used model. 相似文献
157.
158.
Luca Nunziata 《Oxford bulletin of economics and statistics》2005,67(4):435-466
We present an empirical analysis of the determinants of labour cost in OECD countries, with particular reference to the impact of labour market institutions from 1960 to 1994. We show that labour market regulations can explain a large part of the labour cost rise in OECD countries in the last few decades once we control for productivity. These results are consistent with the findings of a companion paper [ Nickell, Nunziata and Ochel (2005) Economic Journal, Vol. 115, pp. 1–27] where the effects of institutions on unemployment are examined. We present also a discussion of the econometric issues related to the estimation of a macro pooled model like ours. We focus, among other things, on the hypothesis of poolability and on the cointegration properties of the model. The explanatory power of the model is finally tested by means of a series of country by country dynamic simulations. 相似文献
159.
This paper estimates the effects of technology shocks in VAR models of the U.S., identified by imposing restrictions on the sign of impulse responses. These restrictions are consistent with the implications of a popular class of DSGE models, with both real and nominal frictions, and with sufficiently wide ranges for their parameters. This identification strategy thus substitutes theoretically motivated restrictions for the atheoretical assumptions on the time-series properties of the data that are key to long-run restrictions. Stochastic technology improvements persistently increase real wages, consumption, investment and output in the data; hours worked are very likely to increase, displaying a hump-shaped pattern. Contrary to most of the related VAR evidence, results are not sensitive to a number of specification assumptions, including those on the stationarity properties of variables. 相似文献
160.
Luca Tacconi 《World development》1997,25(12):1995-2008
The paper presents an ecological economic approach to forest and biodiversity conservation. Constructivist philosophy of social science is critically reviewed and adopted as the methodological basis of the approach. The paradigmatic basis of ecological economics is discussed and a model of human behavior suited to ecological economics is presented. This model accounts for altruistic, normative/affective, and irrational behavior, as well as the role of institutions. A discussion of participatory land use planning, which also accounts for intergenerational equity issues, completes the presentation of the ecological economic approach. Its application to the conservation of forests and biodiversity in Vanuatu demonstrates the operational applicability of the proposed approach. 相似文献