A Spatial Interpretation of the Density Dependence Model in Industrial Demography

In this paper the density dependence model, which was developed in organizational ecology, is compared to the economic-geographical notion of agglomeration economies. There is a basic resemblance: both involve some form of positive feedback between size of the population and growth. The paper explores how the theoretical concepts compare to each other, and if an interdisciplinary cross-fertilization between both is fruitful. It is found that there are a number of important similarities in the underlying theories. These refer to the process of legitimation, which has some close similarities to concepts derived from theories of new industrial districts, such as social capital, institutional thickness, and innovative milieux. Differences remain important as well. For instance, the sociological interpretation of competition is not transferable into notions of agglomeration economies. An important conclusion is that agglomeration effects can and should be incorporated into the density dependence model.     

Numerical distribution functions of likelihood ratio tests for cointegration

This paper employs response surface regressions based on simulation experiments to calculate asymptotic distribution functions for the Johansen-type likelihood ratio tests for cointegration. These are carried out in the context of the models recently proposed by Pesaran, Shin, and Smith ( 1997 ) that allow for the possibility of exogenous variables integrated of order one. The paper calculates critical values that are very much more accurate than those available previously. The principal contributions of the paper are a set of data files that contain estimated asymptotic quantiles obtained from response surface estimation and a computer program for utilizing them. This program, which is freely available via the Internet, can be used to calculate both asymptotic critical values and P-values. Copyright © 1999 John Wiley & Sons, Ltd.     

CHILD POVERTY, INVESTMENT IN CHILDREN AND GENERATIONAL MOBILITY: THE SHORT AND LONG TERM WELLBEING OF CHILDREN IN URBAN CHINA AFTER THE ONE CHILD POLICY

China's One Child Policy (OCP), introduced in 1979, changed fundamentally the nature of both existing and anticipated marriage arrangements and influenced family formation decisions in many dimensions, especially with respect to the number of and investment in children. The policy coincided with the Economic Reforms of 1979 and the trend toward greater urbanization, all of which may have influenced the wellbeing of children. This paper examines the mobility status consequence of children in urban China since the introduction of the OCP and the economic reforms using data drawn from urban household surveys in China. The analysis first makes the comparison between child poverty in Canada, the United Kingdom and urban India, where it was found that both status and trends of child poverty are very different among the countries, with children not being over-represented in the poverty group in urban China. The extent to which the policies influenced investment in children is next examined by studying the way in which the relationship between the educational attainment of children and family characteristics changed within families formed prior to and after 1979. We found that the impact of household income and parental educational attainment increased significantly over time, with a positive gender effect where girls advanced more than boys. Applying new techniques for measuring mobility, we observe the reduction in intergenerational mobility. This phenomenon is found to be particularly prevalent in the lower income quantiles, reinforcing a dynastic notion of poverty.     

Governing farmland conversion: Comparing China with the Netherlands and Germany

Farmland conversion has become an increasing concern in China and other parts of the world, including Europe and the USA. Be it for environmental or food security reasons, questions arise concerning how urbanization should be governed, i.e. what rules and regulations could enhance the efficiency and sustainability of land use. Taking a first step toward answering such questions, this paper describes different governance structures for farmland conversion in the Netherlands, Germany, and China. Secondly, it compares five identified differences between these countries in the realms of land property, land use planning, the role of the market, the role of government, and the performance of governance structures. The purpose of this paper is to develop an approach for comparing governance structures for land conversion that: (a) offers some opportunities for exchange of experience between the three countries and (b) provides a framework for further research on governance structures in farmland conversion.     

Spectrum management reform: Rethinking practices

Unparalleled growth in wireless communications has increased the pressure for more spectrum to support more users, more uses and more capacity. To alleviate that pressure, major regulatory changes were introduced in several countries in two key areas of spectrum management, namely spectrum assignment and allocation. This paper analyzes those changes and discusses strategies and tactics for deregulating the use of radio spectrum. Spectrum management reforms are considered within the theoretical framework of transition economics, which is concerned with optimal reform speed and sequencing. The paper shows how Anglo-Saxon and European countries have been implementing gradual reforms. Meanwhile, Central American reformers have chosen a fast transition from command-and-control regulation to market mechanisms. Transition economics is used to evaluate the advantages and drawbacks of different spectrum reform strategies.     

Matching soulmates

We study iterated matching of soulmates (IMS), a recursive process of forming coalitions that are mutually preferred by members to any other coalition containing individuals as yet unmatched by this process. If all players can be matched this way, preferences are IMS-complete. A mechanism is a soulmate mechanism if it allows the formation of all soulmate coalitions. Our model follows Banerjee, Konishi, and Sönmez, except reported preferences are strategic variables. We investigate the incentive and stability properties of soulmate mechanisms. In contrast to prior literature, we do not impose conditions that ensure IMS-completeness. A fundamental result is that, (1) any group of players who could change their reported preferences and mutually benefit does not contain any players who were matched as soulmates and reported their preferences truthfully. As corollaries, (2) for any IMS-complete profile, soulmate mechanisms have a truthful strong Nash equilibrium, and (3) as long as all players matched as soulmates report their preferences truthfully, there is no incentive for any to deviate. Moreover, (4) soulmate coalitions are invariant core coalitions—that is, any soulmate coalition will be a coalition in every outcome in the core. To accompany our theoretical results, we present real-world data analysis and simulations that highlight the prevalence of situations in which many, but not all, players can be matched as soulmates. In the Appendix we relate IMS to other well-known coalition formation processes.     

The impact of cross-border acquisitions on target banks’ performance in an institutionally poor environment: Ukraine’s takeover wave

We investigate the impact of the 2005–2007 cross-border bank takeovers in Ukraine – a country with poor institutional quality – on the performance of the target banks. Because acquirers targeted mainly larger, less-capitalised banks, we control for selection bias by combining propensity score matching and a difference-in-difference methodology. We find that the cost efficiency of the acquired banks improved after takeover (because of a decreased reliance on deposits), but that neither their profitability nor their loan market shares increased. Overall, our findings tally only piecemeal with the existing multi-country studies for transition economies. This argues in favour of additional single-country research.     

A polarization-cohesion perspective on cross-country convergence

Understanding whether the gap between rich and poor country wellbeing is narrowing is really about whether rich and poor groups can be identified in the overall size distribution of the characteristic of interest, and how those respective subgroup size distributions are changing. Here two simple statistics for analyzing the issue are introduced which are capable of discerning, in many dimensions, changes in the underlying distributions which reflect combinations of increasing (decreasing) subgroup location differences and decreasing (increasing) subgroup spreads, which are the characteristics of polarization (de-polarization). When applied in an examination of the distribution of lifetime GDP per capita over time, the population weighted version exhibits de-polarization and the unweighted version exhibits polarization. As a collection of countries, Africa is diverging from the rest of the world regardless of the weighting scheme.