从“婚配”到“婚恋”：婚姻模式变迁与农村光棍形成——基于关中L村的实地调查

随着打工经济发展与人口流动，农村婚姻市场形成和自由恋爱逐步兴起，由父母主导的传统“婚配”模式向子女自主选择的“婚恋”模式变迁。在开放的婚姻市场中，对婚姻资源的激烈竞争促使农民的婚姻责任发生了代际重塑，表现为子代在婚姻市场中负责恋爱找对象，父代承担婚姻消费支出。从“子代找得到”与“父代娶得起”两个维度分析农村婚姻缔结过程与光棍形成机制，可建构出农村的三种光棍类型。在紧张的婚姻形势下，为了应对婚姻压力，农民的家庭策略发生了重要变化：传统的小农家计模式难以应对婚姻的竞争性消费，倒逼农民主动进入务工市场；父代通过抬高婚姻支付来增加子代在婚姻市场中的竞争力；农民生育观念随着婚姻压力增大而改变。     

基于随机p-鲁棒优化的国家血液战略储备库选址-库存模型

以往的救灾实践对建立国家血液战略储备体系提出了迫切要求。国家血液战略储备库的建设问题亟待解决。由于血液产品特性以及应急血液保障特性的存在，使得国家血液战略储备库的选址决策具有一定的复杂性。本文将问题定位为选址-库存问题。首先，以应急条件下血液保障及时度最高为目标，构建了一个不确定环境下考虑多情景、多血型、多阶段、带提前期、有容量限制、日常随机需求、有预算约束及协同定位的国家血液战略储备库选址-库存模型。同时，为了规避应急条件下的不确定风险，进一步构建了国家血液战略储备库选址-库存问题的随机p-鲁棒优化模型。该模型为离散非线性混合整数规划模型，难以快速精确求解。故基于模型性质，设计了相应的遗传算法。最后，设计了两组算例验证模型与算法的有效性。其中，第1组算例基于我国大陆地区31个省级血液中心与省级行政区的数据，并根据不同预算值给出6个算例，得到了国家血液战略储备库的选址-库存决策方案。第2组算例为6个不同规模的模拟算例，用来测试不同规模下的算法性能。算例结果表明：遗传算法的性能更好；鲁棒解与确定性模型最优值相差不大（最大差距≤1.08%），可降低不确定性导致的风险。实践中，可对本文所建模型稍作改进，应用于具有类似特征的易腐品（药品、粮食等）应急物资储备库选址-库存决策。     

Suburban ethnicities: Home as the site of interethnic conviviality and racism

This article explores the ways in which the white working-class residents of a suburban English town reflect on their relationships with their British Asian Pakistani Muslim neighbors. Its focus is on how everyday constructions of home become sites for the intermingling of discourses of intercultural conviviality and racism. My contention is that the idea of home has not yet been given the detailed critical attention that it deserves in the sociological literature on everyday manifestations of multiculturalism, conviviality, and racism. My supposition is that a special focus on the idea of home as the site of conviviality offers a productive avenue to analyze how intercultural relationships are formed and how the norms of neighborliness are thought to break down, opening a space for commonplace racialized and racist stereotypes to take hold. The idea of home is central to the rhythm and landscape of the English suburbs. It conjures up the idea of a uniform and aspirational white space. Drawing on this imaginary of home, I shall trace how “white working class” “English,” “Scottish,” and “Anglo-Italian” residents’ everyday constructions of home become embroiled with their relationships with their British Asian Pakistani Muslim neighbors.     

陆梁油田薄层底水油藏水平井井筒模拟研究

新疆陆梁油田呼图壁河组油藏发育一类特殊的薄层底水型油藏，其特点是油层厚度薄，构造幅度低，底水能量大，利用水平井开采，表现出无水采油期短、含水率上升速度快、产量递减大的特点。针对这些问题，采用水平井数值模拟方法，建立了考虑摩擦压力损失的水平井井筒模型，明确了摩擦压力损失对水平井的压力分布以及水平段产量的影响，在此基础上，分析研究了水平井底水锥进的水脊特征，判断了水平井出水位置，提出了封堵出水井段并结合油藏工程方法确定了水平井合理产液量，从而达到抑制底水快速锥进，减小压力损失，降低含水率上升速度的目的。     

Measures of emergency preparedness contributing to nursing home resilience

ABSTRACT

Resilience approaches have been successfully applied in crisis management, disaster response, and high reliability organizations and have the potential to enhance existing systems of nursing home disaster preparedness. This study’s purpose was to determine how the Center for Medicare and Medicaid Services (CMS) “Emergency Preparedness Checklist Recommended Tool for Effective Health Care Facility Planning” contributes to organizational resilience by identifying the benchmark resilience items addressed by the CMS Emergency Preparedness Checklist and items not addressed by the CMS Emergency Preparedness Checklist, and to recommend tools and processes to improve resilience for nursing homes. The CMS Emergency Preparedness Checklist items were compared to the Resilience Benchmark Tool items; similar items were considered matches. Resilience Benchmark Tool items with no CMS Emergency Preparedness Checklist item matches were considered breaches in nursing home resilience. The findings suggest that the CMS Emergency Preparedness Checklist can be used to measure some aspects of resilience, however, there were many resilience factors not addressed. For nursing homes to prepare and respond to crisis situations, organizations need to embrace a culture that promotes individual resilience-related competencies that when aggregated enable the organization to improve its resiliency. Social workers have the skills and experience to facilitate this change.     

The Role of Empowerment in Home Care Work

ABSTRACT

The home care industry experiences similar problems with the recruitment and retention of direct care workers (DCWs) as those faced by institutions, and it is important to identify strategies to help retain and grow this important workforce. The empowerment of DCWs has been shown to be an effective strategy for increasing job satisfaction and decreasing turnover in nursing homes but has not been studied in home care. Using Kanter’s organizational theory of empowerment, including structural empowerment (structure of opportunity, access to resources, access to information, and access to support) and psychological empowerment (meaning, competence, self-determination or autonomy, and impact) this study examined whether home care workers (HCWs) feel empowered in carrying out their jobs. An exploratory, qualitative study of 12 HCWs, recruited from two states in the United States, found high levels of both structural and psychological empowerment among research participants, as well as a number of disempowering aspects of their job. Findings suggest ways to support elements of the work that HCWs find empowering and decrease elements that contribute to job dissatisfaction and turnover.     

Intrapartum cardiotocograph monitoring and perinatal outcomes for women at risk: Literature review

ProblemCaesarean section rates have risen in high-income countries. One of the potential drivers for this is the widespread use of CTG monitoring.BackgroundIntrapartum cardiotocograph monitoring is considered to be indicated for women at risk for poor perinatal outcome.AimThis systematic literature review with meta-analysis examined randomised controlled trials and non-experimental research to determine whether cardiotocograph monitoring rather than intermittent auscultation during labour was associated with changes in perinatal mortality or cerebral palsy rates for high-risk women.MethodsA systematic search for research published up to 2019 was conducted using PubMed, CINAHL, Cochrane, and Web of Science databases. Non-experimental and randomised controlled trial research in populations of women at risk which compared intrapartum cardiotocography with intermittent auscultation and reported on stillbirth, neonatal mortality, perinatal mortality and/or cerebral palsy were included. Relative risks were calculated from extracted data, and meta-analysis of randomised controlled trials was undertaken.FindingsNine randomised controlled trials and 26 non-experimental studies were included. Meta-analysis of pooled data from RCTs in mixed- and high-risk populations found no statistically significant differences in perinatal mortality rates. The majority of non-experimental research was at critical risk of bias and should not be relied on to inform practice. Cardiotocograph monitoring during preterm labour was associated with a higher incidence of cerebral palsy.DiscussionResearch evidence failed to demonstrate perinatal benefits from intrapartum cardiotocograph monitoring for women at risk for poor perinatal outcome.ConclusionThere is an urgent need for well-designed research to consider whether intrapartum cardiotocograph monitoring provides benefits.