线性矩阵不等式问题的进化计算解决方法

针对决定模糊控制中稳定性的线性矩阵不等式问题,提出了用进化计算来解决模糊控制中线性矩阵不等式的新算法。实验证明,该算法解“用于实现模糊控制的增益调度和稳定性的线性矩阵不等式”是有效的。     

Strong law of large numbers and complete convergence for non-identically distributed WOD random variables

In this paper, we establish the strong law of large numbers and complete convergence for non-identically distributed WOD random variables. We derive some new inequalities of Fuk–Nagaev type for the sums of non-identically distributed WD random variables. All these results further extend and refine previous ones.     

Addressing inequality: Educators responding to the contexts of young children’s lives?

A child's early relationships and experiences influence their long-term development and learning. In Australia, some children can face complex levels of deprivation when compared to their peers. This study sheds light on how educators are responding. Data analysed consist of individual interviews with early childhood educators working in diverse communities. The findings highlight educators’ accounts of responsiveness as narrowly framed with attention focused on children's cultural heritage which overshadows other equity groups. The paper argues that by becoming sensitive to the contexts of children's lives, there is potential to build the early childhood workforce's capacity for addressing inequalities in childhood.     

Changes in the labour market and health inequalities during the years of the recent economic downturn in Italy

There is widespread concern that episodes of unemployment and unstable working conditions adversely affect health. We add to the debate by focusing on the relationship between work trajectory and the self-reported health of Italian men and women during the present economic downturn. Relying on Italian data in the EU-SILC project (from 2007 to 2010), our sample includes all individuals aged 30 to 60 in 2010, and uses multivariate binomial regression models for preliminary analyses and the Structural Equations modelling (SEM) to observe the cumulative effects of health status according to different job trajectories. Our main findings show similar pictures for men and women. Individuals who are unemployed, ejected or in precarious occupational positions have a higher risk of worsening their health status during these years.     

Parenthood and Well-Being: A Decade in Review

Understanding social aspects of parental well-being is vital because parents' welfare has implications not only for the parents themselves but also for child development, fertility, and the overall health of a society. This article provides a critical review of scholarship on parenthood and well-being in advanced economies published from 2010 to 2019. It focuses on the role of social, economic, cultural, and institutional contexts of parenting in influencing adult well-being. The authors identify major themes, achievements, and challenges and organize the review around the demands-rewards perspective and two other theoretical frameworks: the stress process model and the life course perspective. The analysis shows that rising economic insecurities and inequalities and a diffusion of intensive parenting ideology were major social contexts of parenting in the 2010s. Scholarship linking parenting contexts and parental well-being illuminated how stressors related to providing and caring for children could unjustly burden some parents, especially mothers, those with fewer socioeconomic resources, and those with marginalized statuses. In that vein, researchers continued to emphasize how stressors diverged by parents' socioeconomic status, gender, and partnership status, with new attention to strains experienced by racial/ethnic minority, immigrant, and sexual minority parents. Scholars' comparisons of parents' positions in various countries expanded, enhancing knowledge regarding specific policy supports that allow parents to thrive. Articulating future research within a stress process model framework, the authors show vibrant theoretical pathways, including conceptualizing potential parental social supports at multiple levels, attending to the intersection of multiple social locations of parents, and renewing attention to local contextual factors and parenting life stages.     

考虑零售商质量控制和风险规避的供应链网络均衡研究

研究零售商质量控制和供应链成员风险规避背景下供应链网络均衡问题。应用条件风险值度量风险规避程度,利用变分不等式理论描绘供应链参与者的最优经济行为,设计供应链网络均衡模型,考虑风险规避和质量控制策略对均衡的影响,证明均衡解存在且唯一,并运用Levenberg-Marquardt算法求解均衡模型。最后对重要参数进行数值分析,揭示质量控制和风险规避对供应链均衡解以及参与者条件风险值的影响。研究表明：供应链参与者越规避风险越有利于产品质量水平的提高,风险规避程度的加深会降低制造商或零售商自身的CVaR,同时增大对方的CVaR,对因产品合格率提高带来的利益而言,制造商所得优于零售商。     

Separating Spheres? Diverging Trends in Youth's Gender Attitudes About Work and Family

The authors investigated whether trends in attitudes about gender were consistent with the gender stall primarily occurring in the family domain and examined potential mechanisms associated with changing gender norms. Using data from Monitoring the Future surveys (1976–2015), the authors assessed three components of trends in youth's beliefs about gender: the marketplace, the family, and mothers' employment. Findings showed continued increases in egalitarianism from 1976 through the mid‐1990s across all three dimensions. Thereafter, support for egalitarianism in the public sphere plateaued at high levels, rising support for mothers' employment persisted at a slower pace, and conventional ideology about gender in families returned. The changing demographic composition of American high school students did not account for the gender attitude trends. Youth's mothers' employment and increased education were related to increased egalitarianism. Changes in population averages of mothers' employment and educational attainment were only weakly associated with increases in egalitarian attitudes.     

Are Father’s or Mother’s Socioeconomic Characteristics More Important Influences on Student Performance? Recent International Evidence

Since the early 1970s the importance of mothers’ socioeconomic characteristics on their children’s educational and occupational attainment has been acknowledged. However, it is not clear if fathers’ characteristics have a stronger influence because men usually have stronger attachments to the labour market, or alternatively mothers’ characteristics are more important because of their greater role in children’s socialization. This study addresses this question by comparing the influence of father’s and mother’s education and occupation on student performance in literacy and numeracy using data from 30 countries. The impact of mother’s education is usually greater or comparable to that of father’s education. In contrast, substantially stronger effects for mother’s occupational status compared to father’s were rare. In most countries the impact of mother’s socioeconomic characteristics (education plus occupation) on student performance is comparable to that for father’s. Of the four indicators of socioeconomic background, father’s occupational status and mother’s educational attainment tend to have stronger effects, although many countries do not conform to this pattern. There are indications that the relative importance of mother’s characteristics have increased over time.