基于消费者显著性偏好的双边平台转换成本和定价策略研究

针对消费者对转换成本和价格属性具有显著性偏好的实际情况，基于显著性理论对垄断双边平台企业的转换成本和定价策略问题进行了研究。研究发现：1)在显著性偏好非对称型市场上，对价格敏感的一方收取的价格最低，对高转换成本的一方收取的价格最高，而在显著性偏好对称型市场上，平台的最优价格位于非对称型市场之间，但是对价格敏感型市场收取的价格低于转换成本敏感型市场的价格。2)在高转换成本的市场，平台利润最低；低转换成本市场平台利润最高，而混合型情况的最优利润位于这两者之间。该研究结论说明平台企业应该采取措施来降低用户加入平台的转换成本，从而增加利润，这与现实的案例研究结论相吻合。     

政府奖惩机制下药品安全质量监管三方演化博弈及仿真分析

药品安全关乎人民群众生命健康、经济发展、社会稳定和国家安全，一直以来都是政府和全社会关注的热点问题之一。但是，近年来频发的各类药品安全事件，揭露了政府监管缺失、药品检测机制不完善、公众投诉失效等诸多问题。本文考虑了药品检测中存在寻租现象，构建了药品生产企业、第三方药品检测机构和政府监管部门之间的三方演化博弈模型，分析了各参与方策略选择的演化稳定性，探讨了各要素对三方策略选择的影响关系，进一步分析了三方博弈系统中均衡点的稳定性。研究结果表明：1)政府增强奖励、惩罚力度均有助于促进企业生产高药效药品、第三方药品检测机构拒绝寻租的规范行为，但是增大奖励力度将不利于政府自身履行监管职责；2)政府设定合理的奖惩机制必须符合对各方的奖惩之和大于其投机收益的条件，才能保障演化稳定市场环境下的药品安全；3)上级政府对监管部门失职的问责对增强企业生产高药效药品的稳健性具有重要意义；4)提升企业的药品销售收益、增加企业寻租成本也是避免企业生产低药效药品的有效途径。最后，利用Matlab 2020b进行了仿真分析，为政府完善药品监管机制提出了对策与建议。     

21世纪以来我国教师教育研究图景与发展路向——基于2000-2018年CSSCI来源期刊的知识图谱分析

教师教育是教育事业的重中之重。通过中国知网检索21世纪以来CSSCI来源期刊中的相关文献，以其中2 171篇有关教师教育研究的论文为样本，运用文献计量分析可视化软件Cite Space对文献数量、作者贡献、研究热点、研究层次以及论文被引情况等进行详细统计与梳理，旨在通过知识图谱的方法客观地揭示21世纪以来我国教师教育研究图景，并对教师教育研究发展路向进行全景式分析与展望。就文献数量而言，教师教育研究曲折发展，整体呈上升趋势；就作者贡献而言，尚未形成教师教育研究的核心作者群体，作者大多为高等院校的专家学者，而一线教师、教研员较少；就研究热点而言，主要呈现出有关教师教育的理论研究、改革研究和国别研究三大研究主题；就研究层次而言，主要集中于基础研究。基于此，应进一步加强教师教育研究队伍建设，尽快形成教师教育研究核心作者群体；鼓励多种力量参与研究，进一步丰富研究层次；拓展研究领域，探索教师教育研究多元化发展的新路向。无论是党的十九大报告，还是《教师教育振兴行动计划（2018-2022年）》，都对新时代教师教育提出了更高的要求。师德教育如何推进，教师素质如何提高，教师待遇如何改善，教师教育模式如何创新，教师管理制度改革如何深化，教师教育研究共同体如何构建，这一系列问题需要教师教育研究者深入探索，在习近平新时代中国特色社会主义思想和全国教育大会精神的指引下，为新时代高素质、专业化、创新型教师队伍的建设与发展建言献策。     

“To get the word out”: LGBTQ+ Young adults’ motivations for participating in qualitative research studies

Understanding why socially marginalized individuals, such as lesbian, gay, bisexual, transgender and/or queer (LGBTQ+) people, participate in research can improve qualitative research designs, as well as social services and policies. In providing a participant-centered foundation, we interviewed 65 LGBTQ+ young adults and asked “Why are certain LGBTQ+ young adults motivated to engage in qualitative social science studies?” Many LGBTQ+ young people said they were committed to enacting social change and promoting advocacy. Participants also highlighted supporting scientific research and knowledge production. Finally, LGBTQ?+ participants engaged with research to introspectively analyze their identity development processes. These findings can facilitate access to socially vulnerable and underrepresented groups through a methodological focus on participant benefits.     

No city for migrant women: construction workers’ experiences of exclusion from urban governance and discrimination in labour markets in Ahmedabad

ABSTRACT

Ahmedabad, Gujarat, is one of the fastest growing cities in the world, and a reflection of India’s story of exclusionary economic growth. This article focuses on research carried out with women construction workers with the help of a migrant construction workers’ union in Ahmedabad. It describes the method used by women members of the union to make visible their experiences as migrants in the city – with men, local authorities, and employers – to highlight the additional burdens that they bear due to a negligent state and industry, advocate for better working and living conditions, and raise consciousness of gender inequalities that need to be integrated into the demands of the workers’ union.     

Reasons That Could Lead People to Divorce in an Evolutionary Perspective: Evidence from Cyprus

In the current research, we aimed to identify the reasons that could drive people to get a divorce. In Study 1, we employed qualitative research methods, and we identified 62 reasons that could potentially drive people to get a divorce. Using quantitative research methods, in Study 2 we classified these reasons into 7 broader factors. We found that being a harmful spouse was the most important factor for divorce, followed by incompatibility and in-law problems. We also found significant sex differences in several factors such as women indicating a higher willingness than men to divorce a harmful spouse. In addition, participants with children were less willing to divorce a harmful spouse than those who had no children. Finally, using second-order principal components analysis, we classified the 7 factors into 2 broader domains of reasons for getting a divorce.     

域外植物的输入与中古社会

大量域外植物入华是汉武帝时代丝路开通后的结果,外来的植物引种在魏晋南北朝时得到推广。域外传入的植物用途主要有观赏、食用和用作香料、医药等方面,域外植物的引进改变了中国人的膳食结构,丰富了饮食文化,提高了人们的生活水平,对于中国中古社会的农业生产、饮食文化、医学医药、民间信仰和文学艺术产生了积极影响。有关种植技术的记载出现在魏晋南北朝时期的著述中,反映了这些外来植物在这一时期广泛种植并积累了丰富经验的实际情况。域外植物的种植推动了商品经济的发展。     

Breastfeeding and emerging motherhood identity: An interpretative phenomenological analysis of first time Chinese Australian mothers’ breastfeeding experiences

BackgroundChinese Australian mothers are more likely than the general Australian mothers to introduce formula in the first month of age. A better understanding of the context of formula introduction in the early weeks of birth can provide a deeper insight into how Chinese Australian mothers can be supported to continue exclusive breastfeeding.MethodsAn interpretative phenomenological analysis approach was used to examine the lived breastfeeding experiences of 11 first time Chinese mothers in Australia. The experiences of those who breastfed exclusively were compared to those who introduced formula in the first month after birth.FindingsAn overarching theme across all participants’ narratives was the meaning ascribed to breastfeeding in their emerging motherhood identity. Breastfeeding could be a pragmatic and a socially desirable method to nourish an infant but lacking personal identification to the mother. These mothers were more vulnerable to the early introduction of formula, especially when the support environment was lacking. Maternal identity conflict was common and negatively impacted exclusive breastfeeding and mothers’ mental health. In contrast, mothers who identified closely with breastfeeding showed greater persistence and enjoyment in breastfeeding and were more likely to continue breastfeeding exclusively. Health professionals were perceived to have an important influence in strengthening maternal breastfeeding motivation and self-efficacy.ConclusionBreastfeeding support to Chinese Australian mothers needs to consider how breastfeeding can be better integrated with their motherhood identity. Health professionals are well-positioned to facilitate this process through a better understanding of mothers’ cultural and social contexts around breastfeeding.     

Salutogenic qualities of midwifery care: A best-fit framework synthesis

BackgroundAlthough midwifery care is wellness-based and promotes normal physiology, it exists within a medical model that focuses on risk aversion and disease prevention. Salutogenic theory could provide an alternative approach to midwifery care, supporting health-promoting factors, rather than solely avoiding adverse events.AimsThe aim of this study was to explore women’s experiences of their midwifery care and identify salutogenic aspects of midwifery care.MethodsBest-fit framework synthesis was used to analyse 349 quotes about women’s experiences of midwifery care from 31 qualitative studies in ten high-income countries. Key salutogenic concepts of comprehensibility, manageability and meaningfulness were used as the basis for coding, and thematic analysis was used to expand and clarify the framework to best fit the data.FindingsDefinitions for the salutogenic aspects of midwifery care were developed. Comprehensibility (cognitive aspects of health): ways that midwives help women increase predictability and preparation during childbearing through apredictable caregiver, a predictable system and preparation for an unpredictable experience. Manageability (behavioural aspects of health): ways that midwives enhance and support a woman’s internal resilience, adding extra support when needed, and strengthen women’s external resources through connections to family, community and specialist care. Meaningfulness (emotional/spiritual aspects of health): ways that midwives encourage the commitment and engagement of childbearing women by providing care through a personalised relationship, by cultivating a woman’s autonomy.ConclusionFindings of this study may be used to further research into ways that salutogenic theory can bring a health and wellness-focused agenda to midwifery policy and practice.     

Portrayals of the internal God among Ashkenazi Jewish Orthodox lesbians in Israel

Abstract

Most of the existing literature on Ashkenazi Orthodox Jewish lesbians focuses on sociological aspects, mainly the negative attitudes held by religious communities towards their sexual identity and the various problems that arise from these. Less attention has been paid to lesbians’ psychological coping mechanisms with the tensions between their two central identities: the religious and the sexual. Ashkenazi Orthodox lesbians find themselves in a complicated situation where they remain on the margins of both their “natural” communities: the religious one and the homosexual one. As a result, they feel rejected, isolated, and even punished by society. As believers, God is their ultimate refuge. But there are different conceptions of God, ranging from benevolent to persecutory, accepting or highly judgmental and punishing. This variance has not been considered in regard to the dual identity of Ashkenazi Orthodox lesbians. This article focuses on this neglected issue, examining Ashkenazi Orthodox lesbians’ conception of God and its relation to their managing the conflict between their apparently conflicting identities.