The spatial structure of production with a leontief technology – II: Substitute techniques

The structure of the optimal spatial pattern of production is studied when there are dependencies among production units which can be described by a Leontief technology with substitute techniques, and when there is a single marketplace of final demand, the CBD. Transportation cost is proportional to distance. The various goods are produced in rings. There are a finite number of patterns in which these rings are arranged, and they can be obtained by a finite algorithm. The particular pattern depends on the final demand. Hence there is no ‘non- substitution’ theorem. ‘Reswitching’ of techniques can occur, that is, in an optimal pattern a technique may be operated at large and small distances from the CBD, but not at intermediate distances; this contradicts prevailing beliefs about optimal capital/land profiles.     

Interdependence and the location of economic activities

This paper deals with the ability of a decentralized price system to sustain an optimal assignment of activities assuming complete interdependence among them. There are two goods, each of which is used in its own production and in the production of the other, along with land. An infinitely elastic final demand exists for both goods at given market prices, and either good may be imported. It is demonstrated that a decentralized price system will sustain an optimal allocation of land, and that a nonoptimal allocation of land will not be sustained.     

Market linkages with fragmented production

I use a Ricardian model to analyze the transmission of technology shocks between countries when production processes are fragmented. The analysis emphasizes the role of three factors in determining how the gains from technical progress are shared between the innovating country and the rest of the world: the elasticity of substitution in consumption of final goods, the elasticity of substitution between intermediate and final production stages, and the pattern of production. In contrast to models with trade in final goods only, a high elasticity of substitution in consumption may be associated with losses for the innovating country when there is complete vertical specialization in production. I also examine the transmission of shocks in a three-country world where two countries are linked in a vertical production relationship.     

Intermediate goods and the spatial integration of land uses

A model with two commodities, one final and one intermediate, is set out in a spatial context. Each commodity requires land in production and must be transported at positive costs between sites. Two solutions are possible: an integrated one in which the final and intermediate goods share the same site and a segregated one in which final and intermediate goods occupy distinct areas. The condition for determining which pattern will be efficient is obtained and the result plus a numerical example are related to observations reported on the history of urban areas. The phenomenon of two distinct equilibria is found in a model which permits another factor to be substituted for land in production.     

Outsourcing and trade in a spatial world

This paper provides an analysis of outsourcing and trade in a spatial model à la Hotelling. In this setting, we discuss the trade-off between transport-cost-related disadvantages and outsourcing-related production cost advantages of a large economy and we investigate how the existence of national transport costs influences both the structure of industrial production and the pattern of final goods trade. In addition, the model gives a rich picture of the possible welfare effects of trade liberalization. In particular, we show that a final goods exporting country definitely gains from economic integration, while a final goods importing country may lose. Finally, when lowering domestic outsourcing activities, trade liberalization may reduce world welfare, even if pro-competitive effects lead to a decline in consumer prices.     

Bertrand oligopoly in a spatial context: The case of quantity independent transportation costs

The theory of spatial competition [for a review, see Gabszewicz and Thisse (1985)] is usually based on the assumption of transportation costs which are proportionate to distance and quantity. In reality, however, there exist frequently considerable economies of scale, especially with respect to the conveyed quantity of goods. A good case in point is transportation cost incurred by a consumer patronizing a shopping area. Cost economies of scale will in general influence consumers' optimal choice with respect to quantities and best market places. In the extreme, consumers' outlays on transportation can be considered independent of the purchased quantity, but approximately proportionate to distance. In the present paper, the impact of this assumption on spatial competition is analysed. It will be shown, that existence and uniqueness of spatial oligopolistic equilibrium is restored. Furthermore, due to some residual monopolistic power, prices do not converge to the perfectly competitive equilibrium prices when the distance between the firms shrinks to zero. In conclusion the model exhibits a fundamental difference in the market structure, when the spatial aspect is incorporated.     

Outsourcing and trade in a spatial world

This paper provides an analysis of outsourcing and trade in a spatial model à la Hotelling. In this setting, we discuss the trade-off between transport-cost-related disadvantages and outsourcing-related production cost advantages of a large economy and we investigate how the existence of national transport costs influences both the structure of industrial production and the pattern of final goods trade. In addition, the model gives a rich picture of the possible welfare effects of trade liberalization. In particular, we show that a final goods exporting country definitely gains from economic integration, while a final goods importing country may lose. Finally, when lowering domestic outsourcing activities, trade liberalization may reduce world welfare, even if pro-competitive effects lead to a decline in consumer prices.     

General equilibrium and optimal taxes

It is shown that if subsidies are not excessive, there exists a general competitive equilibrium in the presence of a complex tax structure. Furthermore, under certain continuity assumptions, a tax structure which is optimal from the social point of view can be determined. Procedures maximize quasi-concave after tax profit functions. Consumers have convex budget sets reflect- ing their income from sales and profits minus taxes on fixed income and progressive sales taxes. Their preferences are interdependent, intransitive and incomplete. The government provides public goods and determines the optimal tax regime on the basis of its preferences on the final competitive consumption allocation.     

Certification and socially responsible production

In many markets, consumers are unable to distinguish between goods that are produced in a socially responsible way and goods that are not. In such situations, socially responsible production is not a profit-maximizing strategy, even if the premium that consumers are willing to pay exceeds the costs. Only firms that are genuinely motivated by social responsibility would then produce in this way, and there would be too little socially responsible production. Improved opportunities for voluntary certification could potentially reduce this problem by allowing firms to signal their type. We examine how the possibility of certification affects the share of socially responsible production. Our main result is that increased certification may reduce the share of socially responsible production by reducing prices in the market for uncertified products and thus crowd out socially responsible producers who do not certify. This provide a mechanism through which certification might have adverse effects on socially responsible production, even when the certification process is perfect and when there is perfect competition among the producers.     

The Magnitude and Distance Decay of Trade in Goods and Services: New Evidence for European Countries

Abstract

Using a newly assembled, consistent and disaggregated dataset (12 goods and 7 services) on internal and bilateral trade for 25 European countries, we analyse the difference between trade in goods and services. The measurement of both trade in goods and trade in services is improved over earlier research, allowing us to compare trade in goods and services in a coherent and systematic way. First, our dataset is made consistent with the domestic demand and production and the total exports and imports at the sector and product levels. Second, we explicitly control for re-exports. We find that, although goods are more often bilaterally traded than services, the volume of bilateral trade in services does not attenuate less with distance than the volume of bilateral trade in goods.     

Data center supply chain configuration design: A two-stage decision approach

Data centers are special-purpose facilities that enable customers to perform cloud based real-time online transactions and rigorous computing operations. Service levels of data center facilities are characterized by response time between query and action, which to a large extent depends on data center location and data travel distance. Another aspect of service level is resource up-time availability, which is determined by data center configuration. Data center location and configuration decisions are, therefore, of great significance to ensure uninterrupted operations in customers of manufacturing and service industries relying on cloud-based computing resources. In this study, following a grid-based location approach, we present two mixed integer linear programming models for capacitated single-source data center location-allocation problems. The first model provides optimal locations, capacities and configurations of data centers, and allocation of demands to open facilities when there is no existing facilities in the region. Our second model considers the decision problem of meeting new demand when the existing demand is met by the already opened facilities. We term these newly arrived demand as replication demand, which results either from emergence of new users of existing customers at distant locations in the future, or as a means of increasing data resilience by creating data replication as a backup. To solve the decision problem for meeting primary and replication demand optimally, we propose a two-stage decision algorithm. The algorithm provides optimal locations, capacities and configurations for new data centers, capacity addition decisions to the existing facilities and subsequent allocation of demands. Both models and solution algorithm are implemented using AMPL programming language and solved with CPLEX solver. The models are found to be scalable and capable to provide high quality solutions in reasonable time.     

Using Charm to Adjust for Cross-Hauling: The Case of the Province of Hubei,China

Data for the Chinese province of Hubei are used to assess the performance of Kronenberg's Cross-Hauling Adjusted Regionalization Method (CHARM), a method that takes explicit account of cross-hauling when constructing regional input–output tables. A key determinant of cross-hauling is held to be the heterogeneity of commodities, which is estimated using national data. However, contrary to the authors’ findings for Finland, CHARM does not generate reliable estimates of Hubei's sectoral exports, imports and volume of trade, although it is more successful in estimating sectoral supply multipliers. The poor simulations of regional trade are attributed to the fact that Hubei is a relatively small region, where there is a large divergence between regional and national technology and pattern of final demand. The simulation errors are decomposed into components reflecting differences between regional and national technology, final demand and heterogeneity. The third component is found to be the least important of the three sources of error.     

Assortimentsbepaling van seizoenprodukten

This paper deals with the analysis of a problem often met when determining purchasing policies. From a number of different kinds of goods, which are to be bought, the total quantity is restricted by storing capacity or financial limits. The problem "how much of each kind will be bought" is solved for a discrete as well as for a continuous distribution of demand for the various goods.     

Mergers between local public firms

We consider a country made up of two regions, where each region owns a local public firm and a domestic private one. A national authority decides whether or not to merge the two local public firms. The result depends on whether the goods produced by the firms are homogeneous, substitutes or complements. We find that if the two local public firms produce the same good, the national authority is indifferent as to whether to merge or not. When local public firms produce different goods two cases arise. First, if the firms in each region produce homogeneous goods the national authority merges the two local public firms when the goods are complements, independent in demand and weak substitutes. Second, if the firms in each region produce heterogeneous goods the national authority merges the two local public firms only when the goods are close complements. Therefore, there is greater scope for mergers in the former case than in the later.     

中国外运服务创新模式研究——以河南分公司为例

入世后,我国货运代理市场进一步开放．货运代理面临新的竞争格局。外资船公司纷纷建立自己的货代公司或办事处,直接和全面地控制货流．参与市场竞争．逐步获得货代经营权,对河南的货代业也造成严重冲击。通过全面分析国内外国际货运代理的发展现状,分析了河南国际货运代理业存在的问题,论证了中国外运河南分公司服务创新模型的必要性,提出了货代企业在入世后的市场环境下进行服务创新的策略。     

Interregional tax competition and intraregional political competition: The optimal provision of public goods under representative democracy

This paper explores the implications of the interaction between interregional tax competition and intraregional political competition for the optimal provision of public goods under representative democracy à la (Osborne and Slivinski, 1996) and (Besley and Coate, 1997). As an extension of Hoyt’s (1991) finding that intensified tax competition is always harmful and aggravates the extent to which public goods are undersupplied in a region, we show that intensified tax competition can be beneficial if political as well as tax competition is considered. In particular, we identify plausible conditions under which (i) there is an optimal intensity of tax competition such that the interaction between interregional tax competition and intraregional political competition will result in the optimal provision of public goods and (ii) intensified tax competition will be beneficial if and only if the degree of tax competition is less than this optimal intensity.     

The Adjustment Property

An input–output (IO) system which is capable of producing any semi-positive net product by an adequate choice of the activity levels of its processes satisfies the ‘adjustment’ property. We analyze under which conditions the adjustment property holds for IO systems in which some produced goods have a purely intermediate character. The peculiarity of these pure capital goods is that final demand for them is identically zero. One of the ways to deal with this type of system is to eliminate the pure capital goods, by means of vertical integration.     

ANALYSING THE STRUCTURE OF THE ECONOMY USING PHYSICAL INPUT–OUTPUT TABLES

Analyses using physical input–output tables (PIOTs) are key to understanding the physical metabolism of economies, since they relate production to the generation of emissions and use of resources. Two methods have been developed to calculate the primary resources and emissions associated with a given final demand. However, one of these alters the PIOT, revealing different technical coefficients and Leontief inverse matrices. Which method should be used for structural analysis? In this paper, I compare both methods, explain the structural differences between them and illustrate the latter through a backward linkage analysis. I find that only one method is suited to the analysis of the physical structure of the economy, since it comprehends both the production of goods and associated emissions. The method is identified as a new model capable of tracing by-products as final outputs. Finally, I generalise both methods to analyse PIOTs including several emission types.     

Interregional tax competition and intraregional political competition: The optimal provision of public goods under representative democracy

This paper explores the implications of the interaction between interregional tax competition and intraregional political competition for the optimal provision of public goods under representative democracy à la Osborne and Slivinski, 1996, Besley and Coate, 1997. As an extension of Hoyt’s (1991) finding that intensified tax competition is always harmful and aggravates the extent to which public goods are undersupplied in a region, we show that intensified tax competition can be beneficial if political as well as tax competition is considered. In particular, we identify plausible conditions under which (i) there is an optimal intensity of tax competition such that the interaction between interregional tax competition and intraregional political competition will result in the optimal provision of public goods and (ii) intensified tax competition will be beneficial if and only if the degree of tax competition is less than this optimal intensity.