Social stability challenged by Covid-19: Pandemics,inequality and policy responses

The public health measures implemented to limit the COVID-19 pandemic are likely to affect economic inequalities. In this paper we first provide a theoretical framework to analyse how income inequality contributes shaping the trade-off between economic lockdown and contagion. Our empirical analysis on EU countries shows that the lockdown is likely to significantly increase inequality and poverty and that the magnitude of the change is larger in more unequal countries. To avoid social collapse, countries must consider inequality as an additional source of fragility, while supranational, coordinated health and fiscal policies are needed in the interest of all European economies.     

Welfare states and inequality: Institutional designs and distributive outcome

Comparative studies on inequality have suffered from severe methodological problems, which mean that issues related to the causes of cross-national variation in inequality remain unresolved. In comparative welfare state research, the preoccupation with expenditure data has also meant that the welfare state itself has remained a black box. By examining new comparative data on social policy institutions and income inequality among different population groups, this study provides a more precise empirical basis for evaluating different, and divergent, theories on the welfare state and equality. Three cases will be used as illustrations: family policy and child poverty, unemployment benefits and poverty among working aged, and old-age pensions and poverty among the elderly. The results suggest that the key for understanding the effect of the welfare state lies in the institutional design—in the level and distribution of social rights. The importance of the welfare state for social stratification deserves to be given more attention by sociological research in the future.     

Remittances and the income distribution in Tonga

Receipt of remittances from migrants decreased the inequality of income in Tonga. Policies that attempt to affect migration or remittance flows, such as policies to improve the administration and collection of taxes, should take into account any undesirable effects on the distribution of income.     

The Role of Distributional Coalitions in Welfare Regimes: Chile, Costa Rica and El Salvador

Do social policies in Latin America promote or discourage distribution? And if they do promote distribution, are coalitions a prerequisite? Drawing from a typology of welfare regimes elaborated for 18 Latin American countries, this article explores responses to these questions by addressing three emblematic cases: Chile, Costa Rica and El Salvador – that is, countries where the management of social risks primarily revolves around markets, states and families, respectively. Although the article is exploratory, findings suggest that societal coalitions have been, and are likely to continue to be, weak in market welfare regimes, strong in state welfare regimes and contingent to policy sectors in familialistic welfare regimes.     

消除教育不平等——实现民生的基石

“教育是民族振兴的基石,教育公平是社会公平的重要基础”,改革开放以来,我国教育供给的数量和质量不断提高,但是人们的教育满意度并没有相应地提高,反而教育不公平感却增强了,这源于我国教育发展过程中存在一定程度的教育不平等现象。     

On the relationship between Spearman's rho and Kendall's tau for pairs of continuous random variables

It has long been known that for many joint distributions exhibiting weak dependence, the sample value of Spearman's rho is about 50% larger than the sample value of Kendall's tau. We explain this behavior by showing that for the population analogs of these statistics, the ratio of rho to tau approaches 3/2$3/2$ as the joint distribution approaches that of two independent random variables. We also find sufficient conditions for determining the direction of the inequality between three times tau and twice rho when the underlying joint distribution is absolutely continuous.     

离散型贝尔曼不等式

利用数学归纳法和连续型的贝尔曼不等式给出并证明了离散型的贝尔曼不等式。     

The stratification of universities: Structural inequality in Canada and the United States

This paper conceives national systems of higher education as stratified populations of organizations. This stratification is a structural component of ‘horizontal inequality’ in higher education, and may be exacerbated by current pressures for colleges and universities to compete for resources and status. To explore this structural inequality, we compare the level of stratification in financial resources across four-year institutions in Canada and the United States over a 35-year period (1971–2006). Our analyses provide a first-look at this form of stratification, employing Gini coefficients, Lorenz curves, and boxplots. Our results provide new and compelling evidence of increasing structural stratification, even in Canada's predominantly publicly funded postsecondary system. Findings indicate that the distribution of resources is far more stratified in the American system, and that both systems have become more stratified over time. We conclude by situating structural inequality within more general processes of stratification in education.     

不遵守Bell不等式的量子缠绕(英)

本文给出正交态及非正交态的量子缠绕，通过分析两个实例，发现能够产生不遵守Bell不等式最大限度的缠绕态。     

Is immigrant neighborhood inequality less pronounced in suburban areas?

We investigate suburbanization and neighborhood inequality among 14 immigrant groups using census tract data from the 2008–2012 American Community Survey. Immigrant neighborhood inequality is defined here as the degree to which immigrants reside in neighborhoods that are poorer than the neighborhoods in which native whites reside. Using city and suburb Gini coefficients which reflect the distributions of groups across neighborhoods with varying poverty rates, we find that the immigrant-white gap is attenuated in the suburbs. This finding applies to most of the nativity groups and remains after accounting for metropolitan context, the segregation of poverty, and group-specific segregation levels, poverty rates, and acculturation characteristics. Despite reduced neighborhood inequality in the suburbs, large group differences persist. A few immigrant groups achieve residential parity or better vis-à-vis suburban whites while others experience high levels of neighborhood inequality and receive marginal residential returns on suburban location.