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101.
The enduring COVID-19 pandemic has gradually transformed our everyday lives. This study focuses on changes in work and family arrangements, with particular focus on changes in domestic help, and examines its impact on the division of domestic labor. Using a social survey of work and the family conducted in November 2020 and May 2021, the results show that from January 2020 (pre-pandemic) to May 2021, approximately 40% of respondents experienced a reduced gender gap for housework and childcare, while a large gender gap is still observed in the absolute frequency of undertaking domestic labor. Some lifestyle changes triggered by the pandemic, such as an increase in the use of takeaways or delivery meals, and the expansion of working from home, are found to be able to contribute a shift toward more equal sharing of domestic labor. However, the fact that the access to such lifestyle changes is more common among those with a relatively high income or high educational background suggests that the lifestyle changes imposed by the pandemic may exacerbate class disparities in the gender gap in domestic labor. Furthermore, the results show that decreased kinship support results in a greater childcare burden being placed on women.  相似文献   
102.
ABSTRACT

The concept of “policy advisory systems” was introduced by Halligan in 1995 as a way to characterize and analyze the multiple sources of policy advice utilized by governments in policy-making processes. The concept has proved useful and has influenced thinking about both the nature of policy work in different advisory venues as well as how these systems change over time. However, to date this work has examined mainly cases of developed countries and its application to developing and transitional countries is less certain. This paper sets out existing models of policy advisory systems based on Halligan’s original thinking on the subject and assesses the findings of many existing studies into OECD countries that advisory systems have been changing as a result of the dual effects of increased use of external consultants and others sources of advice – “externalization” – and the increased use of partisan advice inside government itself – “politicization”. Determining whether or not such changes have also characterized the situations found in developing and transitional countries and at the international-domestic and state-sub-state levels is the subject of the papers in this Special Issue.  相似文献   
103.
In this article, an agent‐based framework to quantify the seismic resilience of an electric power supply system (EPSS) and the community it serves is presented. Within the framework, the loss and restoration of the EPSS power generation and delivery capacity and of the power demand from the served community are used to assess the electric power deficit during the damage absorption and recovery processes. Damage to the components of the EPSS and of the community‐built environment is evaluated using the seismic fragility functions. The restoration of the community electric power demand is evaluated using the seismic recovery functions. However, the postearthquake EPSS recovery process is modeled using an agent‐based model with two agents, the EPSS Operator and the Community Administrator. The resilience of the EPSS–community system is quantified using direct, EPSS‐related, societal, and community‐related indicators. Parametric studies are carried out to quantify the influence of different seismic hazard scenarios, agent characteristics, and power dispatch strategies on the EPSS–community seismic resilience. The use of the agent‐based modeling framework enabled a rational formulation of the postearthquake recovery phase and highlighted the interaction between the EPSS and the community in the recovery process not quantified in resilience models developed to date. Furthermore, it shows that the resilience of different community sectors can be enhanced by different power dispatch strategies. The proposed agent‐based EPSS–community system resilience quantification framework can be used to develop better community and infrastructure system risk governance policies.  相似文献   
104.
O2O外卖作为"互联网+"时代下的新型餐饮模式,日益受到人们的关注。本文研究的O2O外卖服务供应链由一个O2O外卖平台、一个餐饮商家和一个配送骑手构成。O2O外卖平台决策平台的服务质量努力和服务费用,餐饮商家决策产品价格,骑手决策配送服务质量努力程度,同时会受到来自平台或商家的服务质量激励。通过分析商家配送、平台配送和商家自建平台+配送三种运营模式,分别构建O2O外卖服务供应链成员的利润函数,运用博弈理论,优化得到不同模式下O2O外卖服务供应链成员的最优质量控制策略和最优利润。利用公式推导和对比分析,分别探讨了骑手激励金额上限和市场规模对服务供应链最优策略和最优利润的影响。通过数值仿真,可得结论:服务供应链各成员利润均随着市场规模的增大而增大,随着骑手激励金额上限的增加而先增大后减少。当市场规模较小时,平台配送模式下商家最优利润最大。而当市场规模较大时,商家自建平台+配送模式下商家最优利润最大。  相似文献   
105.
Many optimisation problems arise in managing the Blood Donation (BD) supply chain. Most of them have been addressed in the literature, while other problems, e.g. donation scheduling, have not been sufficiently addressed so far. However, blood collection from donors may have a disruptive impact on the entire BD supply chain if not properly managed. For example, scheduling donation appointments based on some system metrics may improve the flow of blood units through the BD supply chain and increase the quality of service perceived by donors. In this short communication, we present the donation scheduling problem and highlight the lack of work in the literature that deals with this problem. Then, we analyse the impact of an unbalanced flow of blood units on the BD system and the benefits that may derive from a suitable appointment scheduling. Finally, we propose suggestions for future research in BD collection scheduling that may improve the BD process.  相似文献   
106.
生鲜供应链整体生鲜度的提升对减少浪费、提高供应链整体盈利水平及社会福利有重要意义。本文基于消费者效用理论研究了两供应商和单一零售商组成的供应链系统,构建了单周期下生鲜农产品生鲜度激励模型,模型以供应商为领导者,采用Stackelberg博弈方法求解得到了均衡状态下供应商、零售商的最优定价策略及供应商新鲜度努力选择。研究结果表明,供应商和零售商利润与消费者价格敏感系数呈反向变化,与新鲜度敏感系数呈同向变化。在价格竞争市场,供应商保鲜努力程度和利润与价格替代率呈反向变化;在生鲜度竞争市场,供应商保鲜努力程度和利润与新鲜度替代率呈同向变化。基于研究结论,厂商及政府应当联手引导消费者的消费观念,尽可能减少由于信息不对称引致的道德风险,在市场价格替代率不变甚至降低的情形下,提高生鲜度替代率,使得消费者的意愿支付价格上升,提高自身讨价还价能力,获取更多利润。  相似文献   
107.
李鑫  于辉 《中国管理科学》2019,27(12):43-54
产品与服务融合缓解了"供需错位"矛盾,使得产品服务供应链探索成为"供给侧结构性改革"下供需结构性匹配的重要路径。本文刻画产品服务视角下供应链组织结构的本质特征,构建产品服务供应链合作模型,探讨合作机制下"帕累托改进"区间存在性,揭示合作机制对产品服务供应链效率的作用机理。核心研究发现:供应链多元化组织结构加剧收益分配冲突,并导致服务规模与供应链效率"倒挂"现象,而合作机制下"双重收益共享"合作模型能提升产品服务供应链效率。  相似文献   
108.
By examining the association between employees' perceptions of job security and central labor market policies and characteristics, this paper seeks to understand the mechanisms through which institutions generate confidence and positive expectations among individuals regarding their economic future. The analyses distinguish between different facets of perceived job security and different institutional mechanisms. My multilevel analyses of a data set that contains information on 12,431 individuals and 23 countries show that some labor market policies and characteristics are more likely than others to provide workers with subjective security. Unemployment assistance in particular is an effective means of reducing workers' worries about job loss. Dismissal protection, by contrast, only unleashes its psychologically protective effects under certain conditions. The paper's main conclusion is that the effectiveness of policies varies and that different types of labor market institutions serve as complements rather than as substitutes.  相似文献   
109.
基于供应链集成的网络式新产品开发,不是从一个企业或企业集团层面看,而是从整个产业的层面看,那就是新产品开发是由产业内价值链相关各企业及企业外部研发资源,利用企业间的互动机制,相互创意激发及技术交流而产生新产品的一种模式,这种模式的最大优势是全体参与者的共同参与,发挥全体参与者团体作用的优势,强调产品开发流程,以产出为衡量基准,强调“产出成本效率”的业绩评估体系以及通过对外部资源的充分利用,强调“资源优化和无缝对接”和有效配套管理。  相似文献   
110.
This article analyzes discourse around pop stars Katy Perry and Nicki Minaj as fragrance spokeswomen. It mobilizes the term “post-feminist entrepreneurialism” to describe business strategies for female recording artists representing themselves as workers and capitalist subjects through the endorsement of mass-produced, hegemonically feminine consumer products that exploit individual brands to engender feelings of proximity and empowerment in consumers. Because such entrepreneurial efforts extend female pop stars' industrial viability, post-feminist entrepreneurialism is defined through a critical reclamation of “shelf life,” or the timespan that a commodity can be stored before it spoils. This concept is meaningful for female celebrities who embody the passage of time in complex ways and defend themselves against industrial and cultural perceptions of their own disposability. Post-feminist entrepreneurialism describes the contradiction between empowerment and the erasure of agency for such media professionals. Thus “shelf life” metaphorizes the affective registers embedded within the consumption of endorsed products and the demands placed on female pop stars to sell normatively feminine ancillary properties.  相似文献   
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