Temporal Evolution of Mortality Indicators

Abstract

In Spain, as in other developed countries, significant changes in mortality patterns have occurred during the 20th and 21st centuries. One reflection of these changes is life expectancy, which has improved in this period, although the robustness of this indicator prevents these changes from being of the same order as those for the probability of death. If, moreover, we bear in mind that life expectancy offers no information as to whether this improvement is the same for different age groups, it is important and necessary to turn to other mortality indicators whose past and future evolution in Spain we are going to study. These indicators are applied to Spanish mortality data for the period 1981–2008, for the age range 0–99. To study its future evolution, the mortality ratios have to be projected using an adequate methodology, namely, the Lee-Carter model. Confidence intervals for these predictions can be calculated using the methodology that Lee and Carter apply in their original article for expected lifetime confidence intervals, but they take into account only the error in the prediction of the mortality index obtained from the ARIMA model adjusted to its temporal series, excluding other sources of error such as that introduced by estimations of the other parameters in the model. That is why bootstrap procedures are preferred, permitting the combination of all sources of uncertainty.     

Strategy-proof and individually rational social choice functions for public good economies: A note

Summary. Serizawa [3] characterized the set of strategy-proof, individually rational, no exploitative, and non-bossy social choice functions in economies with pure public goods. He left an open question whether non-bossiness is necessary for his characterization. We will prove that non-bossiness is implied by the other three axioms in his characterization. Received: October 17, 1997; revised version: January 19, 1998     

Relational contracts with subjective peer evaluations

We study optimal dynamic contracting for a firm with multiple workers where compensation is based on public performance signals and privately reported peer evaluations. We show that if evaluation and effort provision are done by different workers (e.g., consider supervisor‐agent hierarchy), first‐best can be achieved even in a static setting. However, if each worker both exerts effort and reports peer evaluations (e.g., consider team setting), effort incentives cannot be decoupled from truth‐telling incentives. This makes the optimal static contract inefficient. Relational contracts based on public signals increase efficiency. Interestingly, the optimal contract may ignore signals that are informative about effort.     

Factors influencing the decision to hire contract labour by Indian manufacturing firms

ABSTRACT

Over a third of workers employed in the Indian formal manufacturing sector are ‘contract’ workers – hired through the services of labour contractors, facing lower wages and no job security in relation to regular workers. We investigate the role of a variety of factors that influence the decision of employers to hire in contract workers, using information from a specially commissioned survey of manufacturing firms. While there are immediate cost advantages that tilt firms towards hiring in contract labour, a counterforce has employers favouring regular workers in firms that have a large proportion of their workforce concentrating on production activity – probably instances where long-term human capital investment by regular workers is important for the firm.

Abbreviation: CLA: Contract Labour (Regulation and Abolition) Act, 1970 ASI: Annual Survey of Industries NIC: National Industrial Classification MSME: Micro, Small and Medium Enterprises SEZ: Special Economic Zone ICRIER: Indian Council for Research on International Economic Relations     

CO-MOVEMENTS IN INTERNATIONAL EQUITY MARKETS

We examine the co-movements of equity returns in four major international markets by characterizing the time-varying cross-country covariances and correlations. Using a generalized positive definite multivariate GARCH model, we find that the Japanese and U.S. stock markets have significant transitory covariance, but zero permanent covariance. The other pairs of markets examined display significant permanent and transitory covariance. We also find that, while conditional correlations between returns are generally small, they change considerably over time. An event analysis suggests that basing diversification strategies on these conditional correlations is potentially beneficial.     

Assessing the effectiveness of fire prevention strategies

ABSTRACT

The authors examined the process of assessing the effectiveness of fire prevention within a Fire and Rescue Service in north west England, demonstrating how this was applied in practice. The approach to fire prevention strategy assessment included overall fire and rescue service performance, performance in relation to different population segments, cost per head performance, and multi-agency collaboration to support an effectiveness-based rather than outcomes-based performance assessment.     

Export quality and income distribution in a small dependent economy

This paper provides a simple general equilibrium structure to analyze the two-way causation between choice of export quality by a small open economy and domestic income distribution. The important policy conclusion of our analysis is the following: When direct quality regulations are costly to impose or may not have desirable consequences for income distribution, the target level of export quality may be met through appropriate direct and indirect income redistribution policies such as wage policies or standard trade policies.     

Testing alone is insufficient

Review of Economic Design - The fear of contracting a serious illness caused by a contagious disease limits economic activity even after reopening. Widespread testing alone will not alleviate this...     

Knowledge-Based Simulation for Business Process Redesign

This research focuses on knowledge-based simulation modeling for process redesign. Though the proposed technique can be utilized for ‘starting with a clean slate’, it is particularly well suited for situations where an existing process is already documented, and an attempt is being made to improve or redesign this process. We present a methodology that utilizes the basic process structure (represented in a matrix form), and using a rule-based knowledge acquisition system, interacts with the analyst to construct the process knowledge base. Once all the knowledge has been acquired, the system automatically generates an executable simulation model. Major benefits of this algorithmic approach include (1) reduced model building time, (2) increased analyst productivity, and (3) the assurance that basic process characteristics are not accidentally omitted in the simulation model. To test the validity and applicability of the proposed technique a prototype system has been developed that generates simulation programs in SLAM.© 1997 John Wiley & Sons, Ltd.     

Asset specificity,capital intensity and capital structure: An empirical test

Capital investment and capital financing decisions interact. To resolve current controversies in investment-leverage-growth relationships requires an integrated industrial organization/financial economics empirical model of profit margins, capital investment intensity, leverage and risk. Using cumulative future losses in discontinued operations to measure the asset specificity of the firm's investments, empiricai results support a complementary (positive) relationship between debt and investment, the debt financing of verifiable contemporaneous growth, equity financing of future growth and the debt financing of specific assets. This evidence rejects the transactions cost theory of capital structure in Fortune 500 firms.