Search results for "Redistribution"
showing 10 items of 85 documents
Ab InitioModeling of Metal Adhesion on Oxide Surfaces with Defects
2000
Our ab initio studies show that surface defects cause redistribution of the electron density which can increase substantially the binding energy of metal atoms to oxide surfaces. The results for electron $({F}_{s}^{0})$ and hole $({V}_{s}^{0})$ centers in the adhesion of Ag atoms (at 1:4 and 1:1 coverages) to a MgO(100) surface, combined with previous studies for charged defects, support earlier ideas of the mechanism of radiation-enhanced adhesion of nonreactive metals on oxide substrates. The results suggest that some optical control of adhesion energies is possible through charge transfer.
Do fire severity effects on soil change in space and time in the short-term? What ash tells us
2013
n the absence of data, the impact of fire, especially wildfires, is measured analysing the fire severity. This post-fire assessment is very useful because allow to identify the degree of destruction imposed by the fire. Among the techniques used to determine fire severity, ash colour is often used, that permit identify the degree of organic matter consumption (darker ash uncompleted combustion, lighter ash completed combustion). The objective of this paper was observed if fire severity changes in space and time, according to ash colour analysis, applying an index. The ash colour analysis was carried out one and fifteen days after the fire. In this area we identified ash with four different …
National-Level Wealth Inequality and Socioeconomic Inequality in Adolescent Mental Well-Being: A Time Series Analysis of 17 Countries
2020
Purpose: Although previous research has established a positive association between national income inequality and socioeconomic inequalities in adolescent health, very little is known about the extent to which national-level wealth inequalities (i.e., accumulated financial resources) are associated with these inequalities in health. Therefore, this study examined the association between national wealth inequality and income inequality and socioeconomic inequality in adolescents' mental well-being at the aggregated level. Methods: Data were from 17 countries participating in three consecutive waves (2010, 2014, and 2018) of the cross-sectional Health Behaviour in School-aged Children study. …
Hydrogen induced metallization of ZnO (11̅00) surface: Ab initio study
2014
Abstract Results of first principles hybrid calculations are presented for hydrogen atoms adsorbed upon non-polar ZnO (1100) surface. The energy of surface atomic relaxation, H adsorption energy, electronic density redistribution and modification of the electronic structure are discussed. It is shown that hydrogen is adsorbed mainly on the surface oxygen ions and forms a strong bonding with them (2.7 eV). Adsorption of hydrogen on the surface zinc ions is energetically unfavorable (− 4.4 eV). It also shown that surface hydrogen atoms are very shallow donors, thus, contributing to the electronic conductivity, and ZnO metallization.
Autonomy Freedom and Preferences for Redistribution
2007
In this paper we study the determinants of people's attitudes toward income inequality and their consequences for redistributive policies. In the light of a recent literature in social choice theory, we argue that an individual's attitudes toward inequality depend upon the extent of autonomy freedom he/she enjoys. We use individual level data to validate our theory and show that the higher the extent of an individual's autonomy freedom, the greater the probability that he/she supports larger income differences as incentives for individual effort. Conversely, the lower the extent of autonomy freedom, the more likely he/she supports the view that incomes should be made more equal. These findi…
The Effects of Fiscal Redistribution
2016
Every discussion on income distribution and inequality distinguishes between market income, namely income before tax and without transfers, and disposable, or net income, which is after tax and including transfers. Hence, taxation and transfers create a redistribution of income. This redistribution is usually progressive, as direct taxes and subsidies are progressive, and thus it is supposed to reduce inequality, in the transition from market income to disposable income. This paper focuses on measuring the effect of fiscal policy in income redistribution and in reducing inequality. It also examines which type of fiscal policy is most strongly related to the redistribution of income, are the…
Democratic governments, economic growth and income distribution
1995
That in democracies more inequality leads to more redistribution is an implication of Allan Meltzer and Scott Richard's well-known model ( 1981).1 That, in turn, more redistribution leads to less growth is a generally accepted proposition. That "inequality is harmful for growth" (Persson and Tabellini, 1994) is thus the predictable result of the introduction of policy-making à la Meltzer and Richard into the theory of growth. The small literature in which such introduction has been attempted includes contributions by Alberto Alesina, Giuseppe Bertola, Roberto Perotti, Thomsten Persson, Dani Rodrik, Gilles Saint- Paul, Guido Tabellini and Thierry Verdier. Short surveys are provided by Perott…
Effects of unconventional monetary policy on income and wealth distribution: Evidence from United States and Eurozone
2019
As an answer to the “Great Recession” and Zero Lower Bound problem, main central banks had to use unconventional monetary policy (UMP). This research focuses on the distributive effects of these measures on household income and household wealth in the United States of America (USA) and the Eurozone. For this purpose, this paper presents four models that were constructed using the Structural Vector Autoregressive methodology (SVAR). The results suggest that the UMPs applied by the Federal Reserve (FED) in the USA could increase wealth and income inequality through the portfolio channel. However, the same results were not observed in the Eurozone. Key words: United States of America, Eurozone…
The effects of monetary policy shocks on inequality
2018
Abstract This paper provides new evidence of the effect of conventional monetary policy shocks on income inequality. We construct a measure of unanticipated changes in policy rates—changes in short-term interest rates that are orthogonal to unexpected changes in growth and inflation news—for a panel of 32 advanced and emerging market countries over the period 1990–2013. Our main finding is that contractionary monetary policy shocks increase income inequality, on average. The effect is asymmetric—tightening of policy raises inequality more than easing lowers it—and depends on the state of the business cycle. We find some evidence that the effect increases with the share of labor income and i…
Optimizing the level of service quality of a bike-sharing system
2016
Public bike-sharing programs have been deployed in hundreds of cities worldwide, improving mobility in a socially equitable and environmentally sustainable way. However, the quality of the service is drastically affected by imbalances in the distribution of bicycles among stations. We address this problem in two stages. First, we estimate the unsatisfied demand (lack of free lockers or lack of bicycles) at each station for a given time period in the future and for each possible number of bicycles at the beginning of the period. In a second stage, we use these estimates to guide our redistribution algorithms. Computational results using real data from the bike-sharing system in Palma de Mall…