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1.
We examine the statistical performance of inequality indices in the presence of extreme values in the data and show that these indices are very sensitive to the properties of the income distribution. Estimation and inference can be dramatically affected, especially when the tail of the income distribution is heavy, even when standard bootstrap methods are employed. However, use of appropriate semiparametric methods for modelling the upper tail can greatly improve the performance of even those inequality indices that are normally considered particularly sensitive to extreme values. 相似文献
2.
A new test is proposed for the weak white noise null hypothesis. The test is based on a new automatic selection of the order for a Box–Pierce (1970) test statistic or the test statistic of Hong (1996). The heteroskedasticity and autocorrelation-consistent (HAC) critical values from Lee (2007) are used, allowing for estimation of the error term. The data-driven order selection is tailored to detect a new class of alternatives with autocorrelation coefficients which can be o(n−1/2) provided there are sufficiently many of such coefficients. A simulation experiment illustrates the good statistical properties of the test both under the weak white noise null and the alternative. 相似文献
3.
We reexamine the Unemployment Rate (UR) – government expenditure nexus in a panel of 50 State and Local Governments (SLGs) over the period 1977–2006 to provide new pre-recession empirical evidence that helps put the expectations on the effects of the federal relief to SLGs in a broader context. We found that: (1) per capita real public spending (total and capital, assistance and subsidies, wages and salaries, and social insurance categories) was part of a cointegrating relationship with UR and real per capita state personal income. (2) With the exception of social insurance, other spending variables, when statistically significant, actually had a depressing effect on UR. The magnitude of this effect, however, was generally small. UR was most sensitive to increases in wages and salaries. (3) Long-term causality analysis based on panel error-correction coefficients provided consistent evidence of a causal effect from spending to UR, but less consistent evidence of such effect in the opposite direction. Social insurance, however, drove UR. (4) The size of the error-correction coefficients suggested a slow response of UR to deviations from the cointegrating relationship. (5) The marginal effect of spending on UR increased with the amount of the federal grants received. Our results suggest that public spending may not serve as a quick fix in relation to UR. They also seem to favour allocation of the federal funds to wage and salaries and assistance and subsidies, but not to capital and social insurance expenditures to lower UR. 相似文献
4.
Constantinos Tsamadias Panagiotis Pegkas Emmanuel Mamatzakis Christos Staikouras 《Economics of Innovation and New Technology》2013,22(4):386-406
ABSTRACTThis study investigates the interplay between research and development (R&D), human capital (HC), foreign direct investment (FDI) and total factor productivity (TFP) in OECD countries. We divide the sample into two sub-groups; the European and the non-European states so as to account for underlying country heterogeneity. The analysis follows a panel data approach over the period 1995–2015, taking into account the modelling on non-stationarity, long-run relationships and short-run dynamics with a panel VAR. Both R&D and HC have a positive effect on TFP, whilst FDI has a positive and significant effect only in the case of non-European countries. Moreover, the contribution of R&D is higher than that of HC and FDI in all cases. Thus, based on these findings, policymakers should design and implement policies to increase resources invested in R&D, with a consistent ongoing spending review, to attract foreign direct investment, especially for the majority of the European and some of the non-European countries and to improve education system on a more productive innovation and research base. 相似文献
5.
La Roumanie apparaît en Europe centrale et orientale comme un territoire d'expérimentation d'une forme particulière d'économie sociale liant coopératives et organisations «not‐for‐profit». En transition économique et sociale, la Roumanie est également un pays en transition territoriale dont les systèmes de financements locaux ont quitté leur approche centralement planifiée, pour rejoindre un secteur financier solidaire dont les Instituts de Microfinance (IMFs) sont les principaux acteurs. La question à laquelle cet article tente d'apporter quelques éléments de réponse est celle du rôle de la finance solidaire locale dans la soutenabilité des transitions socio‐économiques territoriales en cours. Il s'agit d'envisager une économie humaine au sein de laquelle les conditions dignes de vie, nous amène à envisager un modèle particulier d'économie conviviale située à partir des outils conviviaux des finances solidaires locales. 相似文献
6.
In this study Malmquist productivity indexes are used to evaluate the performance of acute hospitals in the UK over the period after the introduction of the internal market in the National Health Service in 1991. The indexes are computed using nonparametric programming, known as Data Envelopment Analysis, and they are decomposed into multiple component measures to give insights into the trends in hospital performance. Overall it is found that productivity regressed in the year after the reforms but progressed thereafter so that overall there was a net progress both as far as the inputs and costs are concerned. Productivity progress is mainly due to overall efficiency progress, which in turn is mostly attributed to allocative efficiency improvements. Technical change resulted in a small reduction in the amount of inputs used but also at higher production costs, because of a worsening in the match between input mixes and relative input prices. However, it is suggested that the gains in productivity are not high enough to argue that the internal market has had a significant impact on productivity. Finally, it is argued that the methodologies employed here can be a valuable evaluative and managerial tool in the context of the new NHS reforms about to be introduced. 相似文献
7.
A quadratic version of the first-difference Okun’s Law model was estimated for Spain (1995.Q1-2012.Q2). An accelerationist version of Okun’s Law was obtained, which allowed us to calculate variable Okun coefficients as well as critical points in the relationship between construction sector growth and the variation in overall unemployment. The optimal economic growth rate was determined to be 7.38 %. By applying principal components, it is demonstrated that this sector led the economic process after 1995. 相似文献
8.
Using Elasticities to Derive Optimal Income Tax Rates 总被引:5,自引:0,他引:5
Emmanuel Saez 《The Review of economic studies》2001,68(1):205-229
This paper derives optimal income tax formulas using compensated and uncompensated elasticities of earnings with respect to tax rates. A simple formula for the high income optimal tax rate is obtained as a function of these elasticities and the thickness of the top tail of the income distribution. In the general non-linear income tax problem, this method using elasticities shows precisely how the different economic effects come into play and which are the key relevant parameters in the optimal income tax formulas of Mirrlees. The optimal non-linear tax rate formulas are expressed in terms of elasticities and the shape of the income distribution. These formulas are implemented numerically using empirical earning distributions and a range of realistic elasticity parameters. 相似文献
9.
Ali Babikir Rangan Gupta Chance Mwabutwa Emmanuel Owusu-Sekyere 《Economic Modelling》2012,29(6):2435-2443
This paper investigates the empirical relevance of structural breaks in forecasting stock return volatility using both in-sample and out-of-sample tests applied to daily returns of the Johannesburg Stock Exchange (JSE) All Share Index from 07/02/1995 to 08/25/2010. We find evidence of structural breaks in the unconditional variance of the stock returns series over the period, with high levels of persistence and variability in the parameter estimates of the GARCH(1,1) model across the sub-samples defined by the structural breaks. This indicates that structural breaks are empirically relevant to stock return volatility in South Africa. However, based on the out-of-sample forecasting exercise, we find that even though there structural breaks in the volatility, there are no statistical gains from using competing models that explicitly accounts for structural breaks, relative to a GARCH(1,1) model with expanding window. This could be because of the fact that the two identified structural breaks occurred in our out-of-sample, and recursive estimation of the GARCH(1,1) model is perhaps sufficient to account for the effect of the breaks on the parameter estimates. Finally, we highlight that, given the point of the breaks, perhaps what seems more important in South Africa, is accounting for leverage effects, especially in terms of long-horizon forecasting of stock return volatility. 相似文献
10.
Nicholas Apergis Emmanuel Mamatzakis Christos Staikouras 《International Advances in Economic Research》2011,17(3):258-273
This paper examines whether the efficiency market hypothesis for the Greek sovereign debt holds. As in Blanco et al. (2005) we test the theoretical equivalence of credit default swap (CDS) and spreads that dictates a CI relationship between the
two. The main innovation of the present analysis is the use of a threshold vector error-correction (TVECM) model, thus allowing
thresholds within the sample covering the period 1990 to 2010. Moreover, by employing this methodology we are able to evaluate
the degree and dynamics of transaction costs resulting from various events due to external market imperfections but also domestic
factors. The main hypothesis we test is to what extent spreads and CDS are indeed integrated that may result in an efficient
and integrated segniorage capital market. Our findings support the gradual integration hypothesis. We find that spreads and
CDS are cointegrated, though threshold effects are also revealed in terms of events that have impacted on markets. 相似文献