Trade liberalization and the evolution of skill earnings differentials in Brazil

From 1988 to 1995, when trade liberalization was implemented in Brazil, relative earnings of skilled workers decreased. In this paper, we investigate the role of trade liberalization in explaining these relative earnings movements, by checking all the steps predicted by the HeckscherOhlin- style trade transmission mechanism. We find that: i) employment shifted from skilled to unskilled intensive sectors, and each Sector increased its relative share of skilled labor; ii) relative prices fell in skill intensive sectors; iii) tariff changes across sectors were not related to skill intensities, but the pass-through from tariffs to prices was stronger in skill intensive sectors; iv) the decline in skilled eamings differentials mandated by the price variation predicted by trade is very elose to the observed one. The results are compatible with trade liberalization, accounting for the observed rei ative eamings changes in Brazil.

Influence of some intermediate variables in the level and differentials of urban and rural fertility in Latin America

Includes bibliography

Analysis of the influence of pre-loading in the rating life calculation of tapered roller bearings applied to lightweight front-axle differentials

For intricate automotive systems that enclose several components, such as gearboxes, an important aspect of the design is defining the correct assembly parameters. A proper assembly can ensure optimized operating conditions and therefore the components can achieve a longer life. In the case of the support bearings applied to front-axle lightweight differentials, the assembly preload is a major aspect for an adequate performance of the system. During the design phase it is imperative to define reference values to this preload, so the application would endure its requirements. However, with the assistance of computer simulations, it is possible to determine an optimum condition of operation, i.e. optimum pre-load, which would increase the system reliability. This paper presents a study on the influence of preload on the rating life of tapered roller bearings applied to light-weight front axle differentials, evaluating how preload affects several key parameters such as rating life and displacement of components, taking into account the flexibility of the surrounding differential housing. Copyright © 2012 SAE International.

Trinidad and Tobago: inter-industry wage differentials

Includes bibliography

Simulation on the effect of mortality differentials by parity on proportions orphaned using data from The Hague 1870-1880

Includes bibliography

Trends in geographical and socio-economic differentials in early age mortality: Guatemala, 1973 and 1981

Includes bibliography

Wage differentials between the public and private sectors in Chile: Evidence from longitudinal data

Includes bibliography.

Occupational mobility and income differentials: The experience of Brazil between 2002 and 2010

Since the start of the twenty-first century, the Brazilian economy has experienced a growth cycle with characteristics unlike those of its previous historical experience, combining growth, macroeconomic stability and distributive progress. In this context, the study aims to analyse the factors and distributive effects of occupational mobility in Brazil, based on data obtained from the Monthly Employment Survey. The results suggest that: (i) mobility has been used in Brazil as a way to raise wages, even when it involves a drop in socio-occupational status; (ii) nonetheless, the wage increase obtained by changing job or occupational segment is smaller for poorer workers than for wealthier ones; and (iii) consequently, mobility helps to increase income, but it also tends to widen wage gaps.

Fertility in Curitiba, Brazil: levels, trends and differentials

Objectives: To identify levels, tendency and recent differentials in fertility in Curitiba, Brazil. Methods: It is a quantitative and temporal series study, in which the birth rates, general and total fertility indicators, for the period of 1995-2007, were calculated and analyzed in Curitiba, Brazil, as well as the proportion of women with high fertility in 2005-2007, compared to the state of Parana. In order to evaluate inner regional differences in the city of Curitiba the same rates were calculated for each one of the administrative districts in the capital. Results: It was noticed a tendency of decline in fertility rates in Curitiba. The total fertility rate in 2007 was 1.49 children per woman and 1.66 in Parana state. The proportion of women with high fertility in the interior of Parana was 1.8 times higher than in the capital. The analysis of fertility rates by districts in Curitiba pointed out important differences: only 10 out of 75 districts had total fertility rates higher than 2.1 children per woman, and 9 districts concentrated 59.6% of women with high fertility. Conclusions: Curitiba showed a quick and sharp reduction in fertility rates. However, the inner regional differences in the city suggests the need to devise actions of reproductive health and social measures, directed to specific groups of population.

Inter-regional wage differentials with individual heterogeneity: evidence from Brazil

This paper uses administrative data to follow Brazilian workers over time and examine what happens to the inter-regional wage differentials after controlling for unmeasured workers' characteristics that are fixed over time. Since the data allow us to track the same workers over the years, we are in the unusual position of obtaining the individual wages before and after the migration process. As a significant share of workers changed States in the sample period, it is possible to examine to what extent the wage differentials reflect the concentration of high-skilled individuals in some States. The results show that the overall wage variability across States drops to almost one third of its original value and the ranking of the State effects is significantly altered after we take into account the workers' fixed effects. A great deal of the inter-regional differentials, therefore, reflects differences in the average ability of workers across States.

Sintesi di immagini realistiche mediante l'uso del Photon differentials come estensione del Photon mapping

Questa tesi intende presentare una tecnica per la sintesi di immagini realistiche al calcolatore basata sul concetto di particle tracing. Il metodo proposto opera una stima sulla densità locale dei fotoni estendendo il concetto del photon differentials anche alla gestione delle riflessioni diffusive. Si è scelto di implementare il nuovo algoritmo di illuminazione globale all’interno di XCModel come estensione del photon mapping.