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471.
The paper examines the effects of environmental uncertainty on Pigouvian tax and abatement policy used, either separately
or contemporaneously, to counteract pollution. We discuss these effects by introducing three kinds of risk: risk on the environmental
quality, risk on the impact of pollution and risk on the impact of abatement. For each case we determine the conditions ensuring
that risk increases the size of public intervention and provide an economic interpretation and some parallelisms with other
risk problems. The last part of the paper generalizes some of our results to the case of N-th order risk changes. 相似文献
472.
We develop a stochastic parameter approach to model the time-varying impacts of food scares on consumption, as an alternative to the inclusion of news coverage indices in the demand function. We empirically test the methodology on data from four food scares, the 1982 heptachlor milk contamination in Oahu, Hawaii and the bovine spongiform encephalopathy and two Escherichia coli scares on U.S. meat demand over the period 1993–9. Results show that the inclusion of time-varying parameters in demand models enables the capturing of the impact of food safety information and provides better short-term forecasts. 相似文献
473.
Mario Coccia Author Vitae 《Technological Forecasting and Social Change》2005,72(2):117-144
The abundance of typologies, within the economics of innovation, has resulted in the same name being used for different innovation types and the same innovation being classified under different typologies. The present research introduces the Scale of Innovation Intensity (SIIN) based on metataxonomy that subsumes other, less comprehensive taxonomies. The SIIN is similar to the seismic Mercalli's scale used to measure the intensity of earthquakes. The impact of technological change is measured by an indicator, called magnitude, based on the impact of technological innovations on the economic system. The theory is applied to some product and process innovations such as agricultural mechanization, aircraft technology, muffler catalytic, aluminum processing, etc. The results show that some innovations have a higher technological intensity and energy (economic impact) on well-being than others. Some concluding remarks are discussed in the final part of this research. 相似文献
474.
Using a three-factor knowledge- and physical capital model of trade and multinational activity, we consider a set of policy experiments to assess the welfare effects of trade and investment liberalization in general equilibrium. Specifically, we address the question of whether and under which circumstances a single versus a combined trade/investment liberalization strategy or a unilateral versus a bilateral policy change is preferable from a single country's and the world's point of view. The focus of this paper is to look at three relevant questions. First, when is investment liberalization beneficial and when is it harmful for a single economy or the whole world? Second, is pure investment liberalization a welfare maximizing strategy? Third, when is either kind of liberalization (trade, investment, or both) welfare improving and when neither of them? 相似文献
475.
In this paper, the existence of some quasi-globally stable processes of price adjustment in a perfectly competitive market, is proved. These processes are relative to a special class of “excess demand” vector fields satisfying regularity hypotheses and boundary conditions of classical type. Modifications of the above processes which, under different hypotheses, are still quasi-globally stable, are studied. 相似文献
476.
Mario Amendola Jean-Luc Gaffard Francesco Saraceno 《Scottish journal of political economy》2004,51(5):654-674
Keynes' main concern in the General Theory is about the capacity of an economy to return to full employment equilibrium when subject to a (negative) demand shock. He maintains that money wages cuts may not help reabsorb unemployment, as they do not necessarily imply a fall in real wages. On the contrary, wage rigidity may be necessary for avoiding that a cumulative process propels the economy far away the full employment equilibrium. Co‐ordination failures in the investment‐saving market are behind this conclusion. However, the analysis is carried out within a static equilibrium framework. This paper is an attempt to focus on the problems of intertemporal co‐ordination arising within the context of a sequential economy. Our analysis of the out‐of‐equilibrium process of adjustment stirred by a shock allows to generalize the original Keynesian intuition. Unemployment emerges as the result of a lack of co‐ordination due to irreversibly constrained choices, and not only nominal but also real wage flexibility does not necessarily help to restore equilibrium. As a matter of fact, it may even be harmful, by triggering processes that make the economy diverge from equilibrium. Our analysis has important analytical implications as regards the role of market imperfections and the interpretation of the effects of monetary policy. 相似文献
477.
Technological paradigms,patterns of learning and development: An introductory roadmap 总被引:5,自引:0,他引:5
This paper presents an evolutionary microeconomic theory of innovation and production and discusses its implications for development theory. Using the notions of technological paradigm and trajectory, it develops an alternative view of firm behavior and learning. It is shown then how these are embedded in broader national systems of innovation which account for persistent differences in technological cappacities between countries. Finally, this bottom-up evolutionary analysis is linked with an institutional top-down approach, and the potential fruitfulness of this dialogue is demonstrated.We thank the discussants and participants at the workshop on Technology and Competitiveness in Developing Countries, Venice, 26/11/93, for their useful comments.The research leading to this work has benefited at various stages from the support of the Italian National Research Council (CNR, Progetto Strategico Combiamento Technologico e Crescita Economica) and of the International Institute of Applied System Analysis (IIASA, Austria). 相似文献
478.
Shamika Almeida Mario Fernando Alison Sheridan 《International Journal of Human Resource Management》2013,24(9):1950-1965
Little attention has been paid to factors that influence employers in their recruitment behaviour, especially as it affects immigrants. In order to address this gap in the literature, a case study of regional Australian employers is used to examine how organisation-based factors influence the employer screening and recruitment of immigrant professionals. The findings indicate that employers are not primarily driven by a human capital lens during the recruitment process. Rather they seem to be influenced by the place and specificity of the process. Some of the key factors which can either favourably or unfavourably influence employers include the organisational size, type, resource availability, ethnic diversity of clients, level of role criticalness, industry-based culture and management style. 相似文献
479.
There is still no consensus on whether small firm or value stock anomalies exist. We examine the last half of the 20th century and apply a six‐factor macroeconomic model to test for the presence of these abnormal returns. Using four proxies for value, we find that detecting this anomaly is sensitive to choice of proxy, the magnitude of the abnormal returns varies over time, and the anomaly does not persist through time. Additional tests provide evidence that abnormal returns for small, value‐oriented, and growth‐oriented firms differ significantly under restrictive versus expansive monetary policy regimes. 相似文献
480.