Microstructure and martensitic transformation behaviors of a Ti–Ni–Hf–Cu high-temperature shape memory alloy ribbon

The Ti₃₆Ni₄₁Hf₁₅Cu₈ melt-spun ribbon undergoes a B2 ? B19′ transformation upon cooling and heating. When the Ti₃₆Ni₄₁Hf₁₅Cu₈ melt-spun ribbon is annealed at 873 K for 1 h, the spherical (Ti, Hf)₂Ni particles with a diameter of 20–40 nm precipitate in the grain interior. The fine (Ti, Hf)₂Ni precipitates improve the stability of phase transformation temperatures and cause martensite domains, with (001) compound twins in three orientations dominant instead of (011) type I twins. {111}-, {113}- and (001)//{111}-type boundaries are observed among these martensite domains. When the (Ti,Hf)₂Ni precipitates coarsen, (011) type I twins become main martensite structures in the ribbon annealed at 973 K for 1 h.     

A novel lattice correspondence of B19 → B19′ transformation in Ti–Ni–Cu shape memory alloy thin film

In this study, we found a novel lattice correspondence of the B19–B19′ transformation in a Ti–Ni–Cu thin film: (1?1?1)_B19′//(0?0?1)_B19, [0, 1, 1]_B19′//[1?0?0]_B19. Near the coarse precipitate and the grain boundaries, the B19′ martensite forms with the novel lattice correspondence to product the (1?1?1) type I twinning instead of the usual (0?0?1) compound twinning. Crystallographic analyses show that the novel lattice correspondence results from the local stress concentration.     

A big fish or a small pond? Framing effects in percentages

This paper presents three studies that demonstrate people’s preference for a large percentage of a small subset over a small percentage of a large subset, when the net overall quantity is equated. Because the division of a set into subsets is often arbitrary, this preference represents a framing effect. The framing effect is particularly pronounced for large percentages. We propose that the effect has two causes: A partial neglect of the subset information, and a non-linear shaped function in the way people perceive percentages.     

Brief Report- Adults' Freely Produced Emotion Labels for Babies' Spontaneous Facial Expressions

English-speaking Canadian, Cantonese-speaking Hong Kong Chinese, and Japanese speaking Japanese adults were shown 13 still photographs of the facial expressions of Chinese babies subjected to various emotion-elicitation procedures. Some respondents were asked to give an emotion label of their choice for each photograph, others to judge its pleasant-unpleasant quality. Only facial expressions taken during the “happy”; condition showed agreement by a majority across all three cultural samples on a specific basic emotion. Agreement on the pleasant-unpleasant quality of the baby's expressions was higher, but still varied with culture.     

心理学理论创新—心理学研究对象扩展性探索

心理学理论创新离不开心理学研究对象扩展性探索,即心理学研究对象边界与范畴的延伸。从科学意义上,心理学研究对象是可证实的心理现象,它是以本体论为前提预设,以可证实性研究方式,以实验方法为技术支持,体现的是研究者价值无涉的研究立场。心理学研究对象扩展性探索新视野在于心理学研究对象还具有主观性、价值性以及常识性水平,体现的是研究者价值涉入研究立场。从价值无涉到价值涉入转向不仅是心理学研究领域和研究视域的扩张,而且也是思维方式的根本性转换,引领和推动心理学理论创新。     

大学生的经济信心与职业决策自我效能的关系—— 归因和主动性人格的调节作用

通过对513名大学三年级学生的问卷调查, 本研究探讨了全球金融危机背景下大学生经济信心对其职业决策自我效能的影响, 以及内外控制点和主动性人格对此关系的调节作用。结果表明：大学生对经济发展的信心能预测其职业决策自我效能; 内外控制点和主动性人格在此关系中, 分别都起到了调节的作用; 当两者进入同一个调节模型时, 主动性人格的调节作用掩盖了内外控制点的作用。这一调节模型丰富了职业决策自我效能的研究理论, 对高校职业生涯辅导具有借鉴意义。     

新生儿真菌血症的调查与分析

了解新生儿真菌血症的流行病学特征,为制定有效的预防措施提供科学依据.采取回顾性调查及病例对照研究方法,分析我院2008年～2010年新生儿真菌血症患者及对照的临床资料、实验室检查结果.结果早产儿及极低体重儿易发生真菌血流感染,感染菌株以非白色念珠菌为最常见,预防性抗真菌药的目标人群可定为早产儿、极低体重儿及细菌性菌血症患儿.     

English- and Chinese-learning infants map novel labels to objects and actions differently

Research based on naturalistic and checklist methods has revealed differences between English and Chinese monolingual children in their trajectories of learning nouns and verbs. However, studies based on controlled laboratory designs (e.g., Imai et al., 2008) have yielded a more mixed picture. Guided by a multidimensional view of word learning (in which different mechanisms are weighted and recruited to different extents over development), we examined English- and Mandarin-learning infants' (n = 128) ability to map novel labels to unfamiliar actions and objects. Findings reveal cross-linguistic variations in the mapping of words to actions versus objects that are consistent with those found previously with naturalistic and checklist methods. Specifically, English learners were able to map novel labels to both actions and objects at 18 months but to neither actions nor objects at 14 months. In an identical experimental paradigm, Mandarin learners at both 14 and 18 months of age were able to map novel labels to actions but not to objects. Similar patterns were found when infants were grouped based on their vocabulary size. Combined results lend support for a dynamic view of word learning that take into account multiple mechanisms interacting across developmental time with important cultural constraints.     

大五人格特质与领导有效性的相关研究

对72家企业的210名管理人员的大五人格特质及其与领导有效性的相关进行了研究,结果表明．管理人员的人格特质可以用神经质、外向性、开放性、宜人性和认真性五个因素加以解释,所编制的五因素人格问卷的信度、构想效度、聚合效度和判别效度都达到了心理测量学的要求;管理人员的人格特质对其领导有效性具有重要的影响。     

教师集体效能和自我效能对工作压力影响作用的调节--多水平分析研究

通过对28所小学1299名教师的调查结果,作者主要对教师集体效能和自我效能对工作压力与教师工作满意度、内在动机及离职倾向之间关系的调节作用进行了分析。多层分析结果表明：(1)教师工作压力与教师工作满意度和内在动机的关系受教师自我效能高低的调节,教师自我效能高的教师．工作压力所带来的负面影响较小;在考虑了教师自我效能的调节作用后,教师工作压力对教师工作满意度、内在动机和离职倾向的影响存在显著的学校水平的差异。(2)学校水平背景特征一教师集体效能对教师工作压力与内在工作动机和离职倾向之间的关系有显著的调节作用,在集体效能高的学校中的教师,工作压力的负面影响较弱。