The Intergenerational Continuity of Fathers' Absence in a Socioeconomically Disadvantaged Sample

Fathers' absence is a pattern that shows intergenerational continuity, most notably within disadvantaged populations. The process whereby this pattern is repeated across generations is not well understood. Using data from the Concordia Longitudinal Risk Project, the authors investigated pathways between fathers' absence in 1 generation and the experience of fathers' absence by their children. The current sample included 386 socioeconomically at‐risk individuals across 2 waves of data collection: (a) when they were children and (b) when they were adults with their own children. Analyses based on structural equation modeling revealed that men whose fathers were absent when they were children were more likely to become absent fathers, and women whose fathers were absent when they were children were more likely to have children with absent partners. Indirect pathways between fathers' absence in 2 generations through aggression, education, and substance abuse were illustrated for women. These findings add to the literature suggesting that fathers' absence during childhood has intergenerational effects.     

Understanding the High Rates of Employment among Low‐educated Women in Portugal: A Comparatively Oriented Case Study

This article addresses the question of why Portugal is an exception among southern European countries in having a high rate of female employment. Cross‐national data show an even greater gap between Portugal and its southern European neighbours in the employment rates for low‐educated women. This article presents case‐based evidence on the work orientations, gender relations and reconciliation strategies of low‐educated women working in the clothing industry in Portugal. The analysis reveals that while economic need plays an important role in their attachment to employment, their work decisions are forged by a complex set of attitudes regarding employment and the family. Traditional values regarding the role of women in the family co‐exist with more modern values regarding their employment participation. Moreover, the institutional arrangements of childcare and reconciliation also appear to be more supportive than might be expected in a southern Europe welfare state. By focusing on a particular group of low‐educated women, the findings suggest that the same welfare policies may have different impacts on the reconciliation strategies of women of different socioeconomic groups.     

The political economy of targeting – a critical review

The political economy models of targeting postulate that going universal is a win‐win situation, for the poor and the middle class, as well as those who are in power. This article critically discusses the assumptions behind the political economy arguments of targeting and tests whether a universal mechanism is bound to politically excel in a low‐income country context. On the basis of attitudinal surveys with the urban, rural and student population in Zambia, we do not find any support for the predictions of the political economy models. We discuss the assumptions of the political economy models in the light of these findings and consider potentially decisive parameters that the models currently do not incorporate.     

气候变化背景下中国低碳制造发展研究

制造业是我国经济发展的重要支柱,也是实现低碳减排的主要战场。建立低碳制造评价指标体系,结合主成分分析法和层次分析法,可对我国制造业的低碳发展进行定量的研究评价,并从制造业低碳经济、低碳技术和低碳环境三方面分析对碳排放的影响。我国的低碳制造水平整体呈上升趋势,未来,我国的制造业既要保持高速发展,同时也要向低碳经济转型,发展低碳技术,调整能源结构。     

Why is the gender revolution uneven and stalled? Gender essentialism and men's movement into ‘women's work'

Men's limited movement into female occupations has been identified as a key barrier to future declines in occupational sex segregation and achieving greater gender equality. So why are men so reticent to enter jobs normatively regarded as female? Drawing from qualitative interviews with multiple stakeholders in four female‐dominated occupations in Australia, this article documents the processes that influence men's employment in gender‐atypical jobs. Gender essentialism is central to many processes that generate and/or stall changes in men's representation in female‐dominated occupations. While gender essentialism's role in producing and reproducing occupation sex segregation is well known, its role in reducing occupational sex segregation is a critical process which has previously received limited attention. The article details gender essentialism's integrative function.     

供应链企业碳减排投资策略选择与行为演化研究

基于当下气候变暖的背景中有社会责任感的消费者对低碳产品有特殊偏好的情境,研究上游企业主导的供应链在面对具有低碳产品偏好的市场消费者时,上下游企业的减排投资行为与策略。依照Stackelberg博弈模型,构建上下游企业采用不同的行为策略的支付矩阵。进而,应用演化博弈理论中双种群演化博弈模型分析得到上下游企业减排投资行为的演化稳定策略:当需要较大的投资或者下游企业分担减排成本意愿较强时,由处于主导地位的上游企业实施投资减排是稳定的;当需要较小的减排投资或者下游企业分担减排成本意愿较弱时,上下游企业组成的供应链中必然会有一个企业实施减排。最后,指出了减排投资系数和下游企业分担投资成本比例的不同对演化博弈稳定均衡的影响。     

生物药品制造行业竞争战略影响企业绩效的时滞效应研究——基于VAR模型的脉冲响应分析

本文利用中国医药生物制品上市公司2003年1季度-2012年1季度的季度财务数据进行了验证性因子分析,构建了差异化和低成本两个因子以反映公司的竞争战略。在此基础上,利用向量自回归(VAR)和脉冲响应的思路考察了战略制定及实施后企业的绩效表现,确定了战略绩效的滞后程度。研究发现:竞争战略影响企业绩效表现出一定的时滞效应;且差异化战略影响企业绩效的滞后期长于低成本战略;同时竞争战略影响企业绩效具有持续性,即竞争战略能够给企业带来持续的竞争优势,且差异化战略影响企业绩效的持续时间相比低成本战略也更长。最后,实证结果还发现,在医药生物制品行业,差异化战略相比低成本战略实施难度更大,风险更高,实施成功的可能性越小。     

Citizens' Anti-highway Revolt in Post-Pinochet Chile: Catalyzing Innovation in Transport Planning

During the last third of the 20th century, citizens throughout North America and Europe organized protests against urban highway projects, influencing urban transport planning in ways that shape its evolution to this day. With the globalization of car-centred urban planning models, some similar movements have emerged in developing countries. What, if anything, can they tell us about citizens' role in innovation to achieve more socially just, good and livable cities? Using a multidisciplinary approach grounded in planning theory and a local adaptation of participatory action research methods, this study explores lessons from an anti-highway movement in Santiago, Chile (1997). This study contributes citizens' perspective on crucial issues within the philosophy and history of city planning, examining shifts in governance that can significantly influence the potential for change in planning and city systems, even under adverse conditions. Is improving participation just a matter of ‘getting the process right’? This experience indicates that it requires re-formulating frameworks to encompass democratization, fostering multi-scalar, self-generating civil society organizations, and focusing on the role of organized citizens, rather than individuals, as they act on policy ecologies. The evidence from this Santiago case supports Portugali's argument that planning is both a profession, exercised by especially trained ‘experts’, and a skill exercised by citizens working from their everyday expertise. This example explores the mechanisms through which, even in a relatively hostile environment, self-generated citizen organizations may play a significant role in contesting business-as-usual debates and achieving innovative policies favouring greater equality and sustainability.     

捆绑策略对于低性能产品引入的价值

如何将低性能产品(低吸引力产品)引入现有高性能产品进行销售已成为企业关注的重要问题,尤其是当低性能产品具有各种边际成本结构以及顾客表现为在更长时间域理性选择购买时机的行为时.研究了捆绑策略对于低性能产品引入的价值,考虑了不引入低性能产品(只销售高性能产品)的基准策略以及引入低性能产品(同时销售两种产品)的完全捆绑策略、分开销售策略与混合捆绑策略.结论显示:当低性能产品的边际成本较低以及与高性能产品之间的竞食性较强时,不引入低性能产品对企业更有利.当低性能产品具有中等(较低)边际成本且与高性能产品之间的竞食性较弱时,企业应当采用混合捆绑策略引入低性能产品.此外,还分析了完全捆绑策略与分开销售策略的适用范围.     

运力受扰的多车场车辆调度干扰管理问题研究

为解决物流配送系统中因运输车辆毁坏而产生的干扰问题,基于干扰管理思想提出了解决问题的扰动恢复策略与实施方案。在扰动度量的基础上,设计了多车场车辆调度扰动恢复策略,建立相应的干扰管理模型。针对多车场车辆调度干扰管理问题的特有属性,设计了一系列求解简化策略,有效简化了问题的求解空间。结合干扰管理模型的特点,使用改进的遗传算法进行求解。最后给出了一个算例,其结果证明了干扰管理模型与算法的有效性。