Atom vacancies at a screw dislocation core in SrTiO3

A screw dislocation in strontium titanate has been studied taking benefit of negative spherical aberration-imaging in a spherical aberration-corrected transmission electron microscope. The core structure of the dislocation is atomically resolved with respect to both cation and oxygen columns by the inclusion of the central core area. The dislocation core is characterized by a helical distortion of the lattice planes, which leads, in particular, to azimuthally elongated image dots associated with individual atomic columns close to the core centre. The atomic coordination in the dislocation core is identified and a high density of atom vacancies is revealed for a Ti–O column at the core.     

师范生职业使命感与学业满意度及生活满意度的关系：人生意义感的作用

采取职业使命感量表、人生意义感量表、学业满意度量表和生活满意度量表对679名免费师范生进行调查,考察免费师范生的职业使命感与其学业满意度和生活满意度的关系,以及人生意义感在其关系中的作用。结果表明:(1)师范生的职业使命感不存在性别和年级差异。(2)师范生的职业使命感对其人生意义体验、学业满意度和生活满意度均存在显著的预测作用。(3)人生意义体验在职业使命感与学业满意度之间起显著的部分中介作用;人生意义体验也在职业使命感与生活满意度之间起显著的部分中介作用。(4)人生意义寻求在职业使命感与学业满意度、生活满意度之间的调节作用未得到支持;人生意义寻求在人生意义体验与学业满意度、生活满意度之间的调节作用也未得到支持,这可能体现了中西文化的差异。     

不同认知方式个体抑制句法歧义的加工

该研究采用自定速的移动窗口范式,考察场依存、场独立个体抑制句法歧义的差异以及句法歧义的加工机制。结果表明:不同认知方式个体在抑制句子中句法歧义的能力上存在差异,与场依存者相比,场独立者能够很好地抑制句法歧义的干扰;而且,实验结果支持句子加工的花园路径模型。     

工作记忆中央执行成分对估算表现的影响

工作记忆中央执行成分在计算加工的诸多过程中发挥重要影响。以82名大学生为被试,采用双任务实验范式考察工作记忆中央执行成分对估算表现的影响。结果发现：1）估算过程需要中央执行成分的参与,增加中央执行成分负荷会导致估算准确率下降;2）无论是否增加中央执行负荷,问题大小效应在估算中均不明显;3）乘法个位数大小顺序会影响估算值的准确性,在有中央执行负荷时数字顺序效应明显。     

杜光庭与蜀地道教——兼论其咏道诗的思想内涵

唐朝是我国道教发展的繁盛时期,尤其是唐玄宗在位期间,李唐王朝的崇道活动更是被推向了顶峰。但是唐朝中期以后,道教在前进的发展进程中却遭遇到强劲的阻力,先是安史之乱,后     

Relations between coparenting and father involvement in families with preschool-age children

A sample (N = 112) composed primarily of European American and middle-class two-parent families with a resident father and a 4-year-old child (48% girls) participated in a longitudinal study of associations between coparenting and father involvement. At the initial assessment and 1 year later, fathers reported on their involvement in play and caregiving activities with the focal child, and coparenting behavior was observed during triadic family interactions. Structural equation modeling was used to test cross-lagged associations between coparenting behavior and father involvement. Overall, paths from father involvement to coparenting behavior were significant, but paths from coparenting behavior to father involvement were not. Specifically, greater father involvement in play was associated with an increase in supportive and a decrease in undermining coparenting behavior over time. In contrast, greater father involvement in caregiving was associated with a decrease in supportive and an increase in undermining coparenting behavior. Multigroup analysis further showed that these cross-lagged relations did not differ for dual-earner families and single-earner (father) families, but these relations appeared to differ for families with focal daughters and families with focal sons. These findings highlight the potential for fathering to affect coparenting and the importance of the role of contextual factors in coparenting-fathering relations.     

医疗改革的公众参与问题研究

公众参与有助于增强医疗改革政策制定的透明度和有效性;但如何使公众能真正参与并影响医疗改革是亟需解决的难题.回顾国外卫生政策制定过程中公众参与的实践经验;发现我国医疗改革公众参与需要从协商监督机制建构、直接参与度设计以及价值观建构三方面开展.