Does output have a unit root? New international evidence

In this paper unit-root tests for per capita output of 12 OECD countries are performed. Using traditional unit-root tests, it follows that the unit-root hypothesis cannot be rejected except for the US. However, following the approach of Perron (1989), which takes shifts in mean and/or trend into account, the null hypothesis of a unit-root can be rejected in most countries in our sample. In contrast to Perron, a method suggested by Christiano (1992)is used to determine the break date endogenously.     

内部控制体系建设中的几点体会——以中国石油股份公司内控建设为例

本文介绍了内部控制体系的内容,从领导、环境、业务流程、制度建设、信息系统建设、内部控制的过程、员工素质、内部控制工作成果八个角度对内部控制体系的建设谈了自己的体会。     

Sectoral Energy- and Labour-Productivity Convergence

This paper empirically investigates the development of cross-country differences in energy- and labour productivity. The analysis is performed at a detailed sectoral level for 14 OECD countries, covering the period 1970–1997. A σ-convergence analysis reveals that the development over time of the cross-country variation in productivity performance differs across sectors as well as across different levels of aggregation. Both patterns of convergence as well as divergence are found. Cross-country variation of productivity levels is typically larger for energy than for labour. A β-convergence analysis provides support for the hypothesis that in most sectors lagging countries tend to catch up with technological leaders, in particular in terms of energy productivity. Moreover, the results show that convergence is conditional, meaning that productivity levels converge to country-specific steady states. Energy prices and wages are shown to positively affect energy- and labour-productivity growth, respectively. We also find evidence for the importance of economies of scale, whereas the investment share, openness and specialization play only a modest role in explaining cross-country variation in energy- and labour-productivity growth.      

Competition Policy as Strategic Trade with Differentiated Products

The paper analyzes how countries use competition policy as a tool for strategic trade. In the model, two countries export to a third country. Each exporting country is endowed with a set of differentiated products. Each government chooses the number of exporters for its country and the products that each exporter sells in the first period, and a tax policy in the second period. Firms choose prices or quantities independently in the third period. In the unique subgame‐perfect equilibrium, both countries group all their products within a single firm—the “national champion policy.” We study the implication of different assumptions about the timing of the game.     

Private versus public consumption within groups: testing the nature of goods from aggregate data

We study the testability implications of public versus private consumption in collective models of group consumption. The distinguishing feature of our approach is that we start from a revealed preference characterization of collectively rational behavior. Remarkably, we find that assumptions regarding the public or private nature of specific goods do have testability implications, even if one only observes the aggregate group consumption. In fact, these testability implications apply as soon as the analysis includes three goods and four observations. This stands in sharp contrast with existing results that start from a differential characterization of collectively rational behavior.     

Improving the estimation of total factor productivity growth: capital operating time in a latent variable approach

Measuring labor and capital services accurately is essential to obtaining reliable estimates of production functions and total factor productivity (TFP) growth. Using data on the operating time of capital, a series that exists for the French business sector, greatly improves the measurement of effective capital services in production. The ensuing estimation results are consistent with Cobb–Douglas technology under constant returns to scale, with the factor elasticities not statistically different from their income shares. In the same framework, TFP growth is estimated as a latent variable and found to be less volatile than accounting residuals, negatively correlated with employment, and free of cyclicality. It is statistically best estimated as a first-order autoregressive process, with an autoregressive coefficient of 0.95. Total factor productivity growth was estimated to have declined steadily between the mid-1970s and mid-1990s, but the rate of decline has diminished since then.     

Bank–firms topology in Italy

An empirical analysis of the Italian system of banks and firms is carried out using the network theory. The emerging architecture of this economic network shows peculiar behaviors: (i) Multiple lending is very widespread; (ii) Small firms are preferentially financed by small banks; (iii) Large firms are financed by many banks; (iv) the ratio between loans and deposits is much higher for large banks than for small banks, while (v) strong size heterogeneity appears among co-financing banks, and (vi) the spanning-tree is very hierarchical.     

武汉城市圈生产性服务业对制造业效率提升作用的实证

采用武汉城市圈9个城市2000--2009年的面板数据,并结合影响制造业效率的其他经济变量,运用计量模型检验了武汉城市圈生产性服务业对制造业效率的提升作用。结果表明：生产性服务业的发展对武汉城市圈制造业生产率具有明显的正向提升效应,资本有机构成提高对武汉城市圈制造业生产率也有明显的促进作用,但劳动者素质和技能水平及外商直接投资作用不明显。最后,提出了进一步增强生产性服务业对武汉城市圈制造业效率提升作用的政策建议。     

Growth in regions

We use a newly assembled sample of 1,528 regions from 83 countries to compare the speed of per capita income convergence within and across countries. Regional growth is shaped by similar factors as national growth, such as geography and human capital. Regional convergence rate is about 2 % per year, comparable to that between countries. Regional convergence is faster in richer countries, and countries with better capital markets. A calibration of a neoclassical growth model suggests that significant barriers to factor mobility within countries are needed to account for the evidence.     

Uk Corporate Acquisitions In Latin America In The 1990s: Lost Opportunities In A New Economic Environment

During the 1990s, foreign direct investment flowed into Latin America at an unprecedented rate. Capital inflows associated with privatizations and private mergers and acquisitions (M&As) rose steeply. Drawing on original firm–level transactions data, this article examines the extent to which UK enterprises participated in the Latin American privatization and private M&A boom. The authors conclude that, relative to their counterparts in many other major industrial countries, UK enterprises adopted a cautious stance, largely eschewing privatization opportunities and concentrating M&A activities on relatively few operations, sectors and countries, in order to strengthen product and market positions. Moreover, the strategic logic guiding the most important corporate acquisitions centred on gaining access to domestic markets rather than attempting to create global export platforms.