Utility and production externalities, equilibrium efficiency and leisure specification

This paper analyzes the implications that the specification of the leisure activity has on the equilibrium efficiency in a two-sector endogenous growth model with human capital accumulation. We consider external effects of consumption and leisure in utility, and sector-specific externalities associated to physical and human capital in production. The optimal tax policy to correct for the distortions caused by the externalities is characterized under all the typical leisure specifications considered in the literature: home production, quality time and raw time. We show that the optimal policy depends markedly on the leisure specification.     

企业规模、城市规模与集聚经济——对中国制造业企业普查数据的实证分析

本文利用我国2004年制造业企业普查数据,检验了不同规模的企业在不同规模的城市中得益于何种类型的集聚经济。结果表明,在控制了人力资本的外部性和城市人口规模效应后,小型企业在中等城市和大城市中显著得益于马歇尔外部经济(行业内集聚经济),在超大和特大城市中显著得益于雅各布斯外部经济(跨行业集聚经济);中型企业在大城市、特大城市和超大城市中显著得益于马歇尔外部经济,但只在特大城市中显著得益于雅各布斯外部经济;大型企业即使在特大和超大城市中也很少得益于雅各布斯外部经济。     

Watershed externalities, shifting cropping patterns and groundwater depletion in Indian semi-arid villages: The effect of alternative water pricing policies

Frequent droughts and groundwater depletion are critical constraints to improving agricultural productivity in the semi-arid tropics. India has been promoting integrated watershed management in drought-prone areas to address these constraints. Watershed communities are being assisted to invest in groundwater re-charging facilities. While communities and the public bear such costs, individual farmers capture irrigation benefits. Groundwater is a free common property resource and land users hold de-facto use rights. This has accelerated private irrigation investments and depletion of aquifers resulting in iniquitous distribution of irrigation water. Power subsidies and negligible pumping costs aggravate the problem. These policy failures and low irrigation costs to farmers are displacing water-efficient crops in favor of water-intensive crops in water-scare areas. The paper reviews the village-level externalities that aggravate groundwater depletion and evaluates potential policy options to enhance local collective action in water management. Using 3SLS, an econometric crop-water productivity model is used to evaluate alternative water policy instruments. The results indicate that different types of water user charges can be introduced with modest consequences on profitability and farm incomes. If properly implemented and managed by the local communities, pro-poor policies could bring considerable sustainability benefits and also ensure enhanced equity in access to the resource.     

Endogenous growth through investment-specific technological change

This paper examines a model in which growth takes place through investment-specific technological change, which in turn is determined endogenously through research spending. In particular, the role of the degree of substitutability between research spending and new capital construction is explored. It is shown that the effect of a change in the capital tax rate on the growth rate can depend on the degree of substitutability between research spending and new capital construction. Research subsidies tend to have a larger impact on the growth rate than would an investment tax credit of the same magnitude. Increases in the capital tax rate can increase the growth rate of the economy, even in the absence of externalities. In contrast to the existing literature, the welfare cost of capital taxation in this model can be negligible. There may be multiple tax rates on capital that achieve the same growth rate. It is demonstrated that in the presence of certain types of positive externalities, the optimal growth rate can be attained through the use of capital taxes—rather than subsidies.     

Existence of equilibria for economies with externalities and a measure space of consumers

Summary. This paper considers an exchange economy with a measure space of agents and consumption externalities, which take into account two possible external effects on consumers preferences: dependence upon prices and dependence upon other agents consumption. We first consider a model with a general externality mapping and we then treat the particular case of reference coalition externalities, in which the preferences of each agent a are influenced by prices and by the global or the mean consumption of the agents in finitely many (exogenously given) reference coalitions associated with agent a. Our paper provides existence results of equilibria in both models when consumers have transitive preferences. It extends in exchange economies the standard results by Aumann [2], Schmeidler [16], Hildenbrand [12], and previous results by Greenberg et al. [11] for price dependent preferences, Schmeidler [17] for fixed reference coalitions and Noguchi [15] for a more particular concept of reference coalitions. We also mention related results obtained independently by Balder [4].Received: 25 May 2004, Revised: 19 October 2004, JEL Classification Numbers: D62, D51, H23. Correspondence to: Bernard CornetThis paper has benefited from comments and valuable discussions with Erik Balder, Stefan Balint, Jean-Marc Bonnisseau, Alessandro Citanna, Gael Giraud, Filipe Martins-da-Rocha, Jean-Philippe Médecin, Jean-François Mertens, Nicholas Yannelis and an anonymous referee.     

Home country employment and foreign direct investment: evidence from the Italian case

The present paper provides further insights on the relationshipbetween home country employment and foreign direct investment(FDI) undertaken by national firms. The unit of analysis iseach ensemble of firms operating in the same industrial sectorand localised in the same geographical region. That allows usto capture both direct and indirect effects of foreign productionon the parent's environment, which arise through the generationof linkages and externalities. Empirical evidence has been providedwith reference to the Italian case in the decade 1985–95.Results suggest that the impact of outward FDI on the labourintensity of domestic production is negative in the case ofvertical investment undertaken—especially by smaller firms—inless developed countries, and positive for horizontal and market-seekinginvestments in advanced countries.     

Water valuation at basin scale with application to western India

A parsimonious hydro-economic model for a data scarce dryland area is presented. It features a basin level decentralized water allocation mechanism which is adapted to incorporate sustainable water use and to deal with the externalities from upstream-downstream linkages. We formulate the profit maximization problem of various agents in a basin, each identifying a sub-basin, who operate within the boundaries of a spatially explicit model that describes the dominant hydrological processes. We address issues of non-convexities and non-steady state conditions and elicit the dependence of a decentralized water allocation on geophysical properties of the basin. In particular, the approach describes how the competition between the drying and drainage functions of sub-basins in dryland areas manifests itself in the optimal valuation of water. The application to an area of over 500,000 km² and 34 sub-basins in western India indicates that intra-basin cooperation could be beneficial; valuation of inter basin flows as a percentage of respective sub-basin income is on an average around 30% when each sub-basin includes downstream valuation as well.     

Convergence of accounting standards and financial reporting externality: evidence from mandatory IFRS adoption

Using mandatory adoption of International Financial Reporting Standards (IFRS) as a natural experiment, we examine whether reporting externalities can be magnified when financial disclosures are based on a common set of accounting standards. Specifically, we investigate and find that the changes in publicly available information of mandatory IFRS adopters (due to the convergence of accounting standards) can impact the investment efficiency of prior voluntary adopters. While we document positive externalities of mandatory IFRS, we also observe heterogeneity in these spillover effects at the firm and the country level, suggesting that externalities increase with improvements in the comparability of accounting information.     

IT for green and green IT: A proposed typology of eco-innovation

This article is in support of the development of an ecological economic framework. It discusses, from an interdisciplinary perspective, the increasing use of green IT and their applications (IT for green). IT and sustainable development have had a concomitant rise and reach. The future world emerging from their respective interpretations enables, in both cases, a shift from today's questionable industrial capitalism towards post-industrial capitalism. This paper addresses the following questions: What is known about green IT and IT for green? Are smart solutions (buildings, energy grids, transport) always beneficial to an ecological economy? And, if so, in what ways? In the first part of this article, we analyse the economic, social and environmental impact of IT and argue for the need for green applications of green IT in order to achieve sustainable outcomes. The second part focuses on the managerial dimension of eco-innovation theory and presents one of the distinctive features of green applications of green IT: the collective organisation of innovation. A typology of eco-innovation aimed at reconciling IT development and green growth is then proposed explicitly addressing four kinds of changes towards sustainable development: technological, social, institutional and organisational innovation.     

Externalities of investment, education and economic growth

We present a growth model in which investment in physical capital shows positive externalities which build up knowledge capital. A prerequisite for these spillovers to take place is that a country devotes time to education. Externalities associated with investment need education to raise the stock of knowledge capital. Analysing the competitive economy we demonstrate that the model may explain why some low-income countries show convergence whereas others do not. Furthermore, we demonstrate that in the social optimum the level of investment is always higher than in the competitive economy whereas the time spent for education may be lower or higher. We also show how the competitive economy may replicate the social optimum for an appropriate choice of a lump-sum tax and an investment subsidy. Empirical evidence is provided in order to demonstrate the plausibility of our model.