发展中国家的普遍服务政策

该文构建非对称信息模型分析普遍服务政策问题,其中政府对企业在农村提供服务的边际成本具有非对称信息.该文对区别定价和统一定价两种情形进行了对比分析.在实施区别定价时,不完全信息将提高农村地区的资费水平,并且降低相应的网络覆盖面积;而在实施统一定价时,农村地区的定价可能降低,但却是以网络覆盖的减少为代价的.该文的政策结论是:在实施普遍服务政策时,需要综合考虑网络投资的激励和用户承受能力.     

Appropriate technology in a Solovian nonlinear growth model

We propose a Solovian growth model with a convex–concaveproduction function and international technological spillovers.We test the empirical implications of the model, analysing theeffects of the productivity slowdown that followed the oil shocksof the 1970s. We argue that this slowdown, altering the worldincome distribution, affected the pattern of international technologicalspillovers, taking the poorest countries further away from thetechnological leaders, and therefore unable to exploit theirtechnologies. The result is the emergence of a poverty trapfor low-income countries.     

Which shape fits best? Designing the organizational form of local government procurement

The way that public procurement activities are organized has an impact on the performance of public institutions. By reviewing the literature on public procurement organization dimensions this study offers a conceptual framework for public procurement organizational design, distinguishing between the macro, micro and process level dimensions. The framework is tested across the procurement departments of 15 local governments in Wales and Italy. We identify six alternative organizational configurations, differing in their level of centralization and their procurement status within the institution. Their suitability and potential for redesign depend on several internal and external contextual factors (goals, government decision, regulation, geographical environment) in line with the contingency view of organizational design.     

Robust political economy correlates of major product and labor market reforms in advanced economies: Evidence from BAMLE for logit models

The political economy literature has put forward a multitude of hypotheses regarding the drivers of structural reforms, but few, if any, empirically robust findings have emerged thus far. To make progress, we draw a parallel with model uncertainty in the growth literature and provide a new version of the Bayesian averaging of maximum likelihood estimates (BAMLE) technique tailored to binary logit models. Relying on a new database of major past labor and product market reforms in advanced countries, we test a large set of variables for robust correlation with reform in each area. We find widespread support for the crisis‐induces‐reform hypothesis, as high unemployment and economic crises are robustly correlated to structural reforms. We also find evidence of reform convergence—that is, countries with tighter regulation are more prone to liberalize. Reforms are more likely when other countries also undertake them and when there is formal pressure to implement them. Other robust correlates are more specific to certain areas—for example, international pressure and political factors are most relevant for product market and job protection reforms, respectively.     

Falling Wage Shares in Europe and the United States: How Important is Aggregation Bias?

This paper sheds light on the importance of aggregation bias in the analysis of wage shares developments over time and across countries. We focus on five European countries and the United States and show that the trend decline in the aggregate wage share observed in these countries over much of the 1980s and 1990s partly reflects changes in the sectoral composition of the economy. The application of a fixed-weight aggregation method changes the profile of the observed wage share in a significant way: in particular there is no longer sign of an overshooting of the wage share levels of the early-1970s. Error-correction wage equations based on the adjusted wage shares generally have a better regression fit and show long-run elasticities of real wages to unemployment that vary less across countries and are substantially lower than those obtained with observed shares.     

HEATH–JARROW–MORTON INTEREST RATE DYNAMICS AND APPROXIMATELY CONSISTENT FORWARD RATE CURVES

We study a finite-dimensional approach to the Heath–Jarrow–Morton model for interest rate and introduce a notion of approximate consistency for a family of functions in a deterministic and stochastic framework. This amounts to asking the decrease of the minimum distance in least squares sense. We start from a general linearly parameterized set of functions and extend the theory to a nonlinear Nelson–Siegel family. Necessary and sufficient condition to have approximately consistency are given as well as a criterion of stability for the approximation.     

Internationalisation,Innovation and Productivity: How Do Firms Differ in Italy?

This paper addresses the issue of intra‐industry heterogeneity and internationalisation. We show that, after controlling for sector, location, firm age and size, Italian manufacturing companies exhibit different economic and innovative performance according to their involvement in foreign activities. In particular, exporters show intermediate innovative performance between non‐internationalised firms and those carrying out foreign production. Multinationals with a lower commitment to foreign markets, i.e. with non‐manufacturing activities abroad only, exhibit a higher productivity than exporters but they do not appear to innovate more than the latter. Heterogeneity in productivity is robust to controlling for innovation inputs and outputs, suggesting that the difference in economic performance cannot be entirely attributed to different innovative activities, and that the involvement in international operations can be a distinct channel of knowledge accumulation.     

Market Structures with Multi-product Firms: Welfare Analysis and Policy Implications

In the real world firms operate in more than one market and consequently can exploit scope economies and/or demand complementarities. Introducing multi-product firms in the picture makes the standard assumption that more competition is always beneficial for social welfare less clear-cut. In this paper we show that a concentrated structure can be socially preferable in the presence of scope economies, whereas a fragmented structure has to be preferred when products are close substitutes. We also identify either analytically or numerically the socially optimal market structure when aggregate output (and then consumer surplus) or total welfare are used as ranking criteria. The analysis is useful for discussing which market structure should be favored by policy makers aimed at introducing competition in sectors which were previously monopolized by state-owned firms. To that respect, our findings point out that not only the level (number of firms) but also the form (type of firms) of competition matters.