Patterns of Aging-Related Changes on the Way to 100

Abstract

The objective of this paper is to investigate dynamic properties of age trajectories of physiological indices and their effects on mortality risk and longevity using longitudinal data on more than 5,000 individuals collected in biennial examinations of the Framingham Heart Study (FHS) original cohort during about 50 subsequent years of follow-up. We first performed empirical analyses of the FHS longitudinal data. We evaluated average age trajectories of indices describing physiological states for different groups of individuals and established their connections with mortality risk. These indices include body mass index, diastolic blood pressure, pulse pressure, pulse rate, level of blood glucose, hematocrit, and serum cholesterol. To be able to investigate dynamic mechanisms responsible for changes in the aging human organisms using available longitudinal data, we further developed a stochastic process model of human mortality and aging, by including in it the notions of “physiological norms,” “allostatic adaptation and allostatic load,” “stress resistance,” and other characteristics associated with the internal process of aging and the effects of external disturbances. In this model, the persistent deviation of physiological indices from their normal values contributes to an increase in morbidity and mortality risks. We used the stochastic process model in the statistical analyses of longitudinal FHS data. We found that different indices have different average age patterns and different dynamic properties. We also found that age trajectories of long-lived individuals differ from those of the shorter-lived members of the FHS original cohort for both sexes. Using methods of statistical modeling, we evaluated “normal” age trajectories of physiological indices and the dynamic effects of allostatic adaptation. The model allows for evaluating average patterns of aging-related decline in stress resistance. This effect is captured by the narrowing of the U-shaped mortality risk (considered a function of physiological state) with age. We showed that individual indices and their rates of change with age, as well as other measures of individual variability, manifested during the life course are important contributors to mortality risks. The advantages and limitations of the approach are discussed.     

The supply of and demand for accounting information

The article analyzes the use of accounting information in Russia. We assess reporting behaviour in the lending process for a sample of Russian companies in the years 1999–2004 and postulate that Russian companies manage their earnings in order to avoid showing losses when applying for bank financing. Once a credit has been granted, companies are predicted to manage earnings because of the bank's monitoring activities. By means of univariate and multivariate analysis we are able to attribute the discontinuity around a zero target in the earnings distribution with firms’ response to the banks’ assessment of accounting performance. This implies that financing considerations affect the reporting incentives of Russian companies.     

Governance of the Entrepreneurial Threshold Firm: A Knowledge-based Perspective

ABSTRACT By building on a knowledge‐based view of the firm, this paper addresses a relatively unexplored area of roles and dynamics of corporate governance in younger, threshold firms that are undergoing a transition from the emergence to the professional management stage. Our analysis is focused on the process of capability development, exploring the effect of the asymmetry in knowledge that often exists between directors and senior managers on the governance of threshold firms. We examine the key sources of this asymmetry, explore ways directors and senior executives learn, and then discuss the implications of this learning on the evolution of governance systems in the threshold firm.     

The effects of ownership concentration on investment and performance in privatized firms in Russia

This paper provides new survey evidence on effects of concentrated ownership on restructuring and performance in privatized firms in Russia. The major findings are that large‐block shareholding is negatively associated with the firm's investment and performance, and this relationship does not depend on the identity of controlling shareholders. These results are consistent with the assumption that when minority shareholders' rights are not adequately protected, the entrenched controlling shareholders may be engaged in extracting ‘control premium’ before pro rata distribution of dividends. The issues raised have relevance to other transitional economies where the privatization process has been followed by an increase in ownership concentration. Copyright © 2001 John Wiley & Sons, Ltd.     

Preparing Russian Small Innovative Enterprises for International Competitiveness: A Scoping Study

Russian small innovative enterprises (SIEs) are emerging as an important force behind the restructuring of the Russian economy and its industrial and commercial infrastructure. The research presented in this paper suggests that there are at least three categories of factors that impact the move of Russian SIEs into international markets: (i) macro-economic obstacles (ii) lacking managerial and business competencies and (iii) differences in culture and business practices. The first factor cannot be directly influenced by the individual SIE, while the latter two represent opportunities of a developmental nature. The work of this paper purports to lay the groundwork for more theoretical follow-up analyses.     

The role of corporate governance in FDI decisions: Evidence from Taiwan

There has been a considerable literature on the determinants of why firms undertake foreign direct investment (FDI), but very little on whether firms with different governance characteristics are more or less likely to venture overseas. For example, are family-controlled firms more predisposed to FDI than firms, with similar attributes, but different forms of ownership? Does the presence of institutional shareholders suggest a greater propensity to invest abroad? Does the composition of the Board of Directors have an impact? Most extant studies of corporate governance focus on the impact of governance factors on firm performance. However, these performance outcomes are a function of the strategic decisions made by the firms, which suggests it might be useful to consider the relationship between corporate governance factors and particular strategic decisions. One example is the decision to undertake foreign direct investment. The two main strands of IB literature on the determinants of FDI have little or nothing to say about how corporate governance factors might affect the FDI decision. Both internalisation theory and the resource-based view see FDI primarily as a means by which firms can appropriate rents in overseas markets from the exploitation of their idiosyncratic resources and capabilities. This paper extends this literature by investigating the effects of governance factors on the decision to undertake FDI. In particular, we want to assess the impact upon the FDI decision of (a) the extent of family control, (b) the presence of domestic and foreign institutional shareholders, and (c) the composition of the Board of Directors. We investigate these effects using a sample of 228 publicly listed firms in Taiwan, and our results clearly indicate that family control and share ownership by domestic financial institutions in Taiwanese firms are associated with the decision to undertake FDI. We also find that corporate governance impacts in different ways with regard to Taiwanese FDI in China in comparison to Taiwanese FDI in the rest of the world.     

CORPORATE GOVERNANCE AND VOUCHER BUY-OUTS IN RUSSIA

This paper examines the issues which may create pressures and incentives to introduce efficiency-enhancing governance structures in enterprises which are privatized through voucher schemes in Russia. These pressures emphasize the need to view buy-outs created on privatization as transitory organizational forms with a three-stage process being suggested as the most feasible for developing governance mechanisms which produce efficiency gains, The paper uses illustrative case studies of the first major enterprises to experience post-privatization ownership changes.     

A supply-demand model of public sector size

We develop a supply-demand model for the public sector with a political equilibrium. The model considers the inefficiencies caused by taxes and includes costs associated with the provision of public goods to consumers. We show that the size of the public sector may depend on the median voter's income, population size, costs associated with paying tax, and quality of institutions, all of which reflect the costs of provisioning public goods. The estimates for the Organisation for Economic Co-operation and Development member countries are compatible with theoretical predictions; however, they do not confirm Wagner's law, which holds that the public sector share does not grow with an increase in income. A greater dependency ratio and the Gini coefficient increase demand for redistribution policies. Greater government effectiveness is a supply-side factor that increases the public sector's share in an economy.     

Population ageing and inflation with endogenous money creation

This paper models a mechanism through which population ageing may induce a deflationary process. We propose an overlapping-generations model (OLG) with money created by credits (inside money) and intergenerational trade. The model links demographic factors, such as fertility rates and longevity, to prices. We show that lower fertility rates lead to smaller demand for credit and lower money creation, which in turn cause a decline in prices. Changes in longevity affect prices through real savings and the capital market. Furthermore, a few links between interest rates and inflation are addressed; they arise in the general equilibrium and are not thoroughly discussed in literature. Long-run results are derived analytically; short-run dynamics are simulated numerically.