Deposition-rate dependence of granular size distribution in Cu aggregate on liquid substrate studied by atomic force microscopy

In this article, we report an atomic force microscopy study on the microstructure and the deposition-rate dependence of granular size distribution in copper (Cu) ramified aggregates on a liquid substrate. This study shows that the ramified Cu aggregates are composed of Gaussian size distribution granules, which form immediately after the Cu atoms are deposited. The interesting phenomenon is that the mean diameter Φ_m of the granules exponentially decays and approaches a stable value Φ_c with an increase in the deposition rate f. The granular mean diameter Φ_m slightly changes with the time interval Δt during which the film is kept in the vacuum chamber, owing to the large diffusion coefficient of the Cu granules on the liquid substrates. The experimental behavior strongly depends on the properties of the liquid substrate.     

The advantages,shortcomings, and existential issues of Zhuangzi’s use of images

Zhuangzi is considered a creative poet-philosopher because of his use of imaginative images. He used the imaginative images of his system to construct the world of the Dao. He left the essence of material things as they are to speak for the mystery of existence itself, and let them express both the state of and the dream for human freedom. Zhuangzi’s way of using images shows his own lack of the understanding about images, and his lack of adequate assessments. He used images in accord with his own personal preferences and fixed characteristics. He also had a tendency to equate the Dao which he experienced in his mind with the Dao itself. These shortcomings limit his improving and understanding of the Dao, so that his Dao failed to become more open to a wider existence.     

男女两性在文化震荡、心理健康及其关系中的差异比较

采用自编问卷对1555名30岁及以上被试受文化震荡的影响程度及其心理健康进行调查,分别探讨不同生活环境和环境相同但受教育程度不同的男女两性在两变量及其关系中的差异。结果表明:(1)总体上,男性报告的文化事件的主观影响明显比女性更积极,但其心理健康水平却明显低于女性;男女两性在文化震荡与心理健康之间均存在显著正相关,但具有不同特点。(2)不同生活环境和同一生活环境中不同受教育程度的男女两性在文化震荡、心理健康中均存在不同程度的差异;在这两变量间也均存在不同方面的显著正相关。     

Parenting and Chinese Adolescent Suicidal Ideation and Suicide Attempts: The Mediating Role of Hopelessness

Various family factors are risk factors for adolescent suicidality (suicidal ideation and suicide attempts). However, little is known about the role of parenting in adolescent suicidality. The present study examined the unique relations between three parenting dimensions (parental warmth, behavioral control, and psychological control) and adolescent suicidality, as well as the mediating role of adolescent hopelessness among these relations. A total of 1529 Chinese adolescents (52 % male; mean age = 14.74 years, SD = 1.48) completed anonymous questionnaires designed to assess three parenting dimensions, hopelessness, suicidal ideation and suicide attempts. After controlling for gender, age, family structure, and socioeconomic status, it was found that parental warmth negatively predicted adolescent suicidality, whereas psychological control positively predicted adolescent suicidality. In addition, parental warmth negatively predicted adolescent hopelessness, whereas psychological control positively predicated adolescent hopelessness, which in turn enhanced adolescent suicidality. Although behavioral control did not predict adolescent suicidality, it did negatively predict adolescent hopelessness, which in turn promoted adolescent suicidality. These findings revealed the differential roles of different parenting dimensions in adolescent suicidality, and the mediation effect of adolescent hopelessness between parenting and adolescent suicidality. Future practices would benefit from incorporating both parenting and hopelessness for optimal intervention effect.     

麦角酰胺对于猕猴纯音延缓防御反应的影响

一、在猕猴上建立了纯音比配延缓防御反应。一般能完成9秒的延缓反应。最长可延缓15秒。 二、静脉注射LSD对于纯音比配延缓反应有明显的影响,药物注射后延缓反应正确百分率由原来80%以上的水平降到10%—70%。一般24小时后即恢复正常。 三、本文对LSD引起的猕猴纯音延缓反应障碍与LSD引起的临床症状作了比较讨论。     

Flexible Computerized Adaptive Tests to Detect Misconceptions and Estimate Ability Simultaneously

The Scaling Individuals and Classifying Misconceptions (SICM) model is an advanced psychometric model that can provide feedback to examinees’ misconceptions and a general ability simultaneously. These two types of feedback are represented by a discrete and a continuous latent variable, respectively, in the SICM model. The complex structure of the SICM model brings difficulties in estimating both misconception profile and ability efficiently in a linear test. To overcome this challenge, this study proposes a flexible computerized adaptive test (FCAT) design as a new test delivery method to increase test efficiency by administering an individualized test to examinees. We propose three item selection methods and two transition criteria to determine adaptive steps based on the needs of estimating one or two latent variables. Through two simulation studies, we demonstrate how to select an appropriate item selection method for an adaptive step and what transition criterion should be used between two adaptive steps. Results reveal the combination of the item selection method and the transition criterion could improve the estimation accuracy of a specific latent variable to a different extent and thus provide further guidance in designing an FCAT.     

无关工作记忆表征的负性情绪信息能否捕获视觉注意?一项眼动研究

研究通过分析视觉搜索任务的首次注视点和行为反应时, 探讨无关工作记忆表征的负性情绪信息对视觉注意选择的影响。实验1发现在反映早期注意选择的首次注视点百分率指标上, 不管工作记忆表征的情绪效价如何, 均出现了显著的注意捕获效应; 实验2发现当采用中性情绪靶子刺激时, 首次注视点百分率指标上仍表现出了稳健的注意捕获效应; 在首次注视点持续时间指标上, 实验1和实验2均发现记忆匹配条件的干扰刺激显著小于控制条件的干扰刺激, 表现出注意的快速脱离; 而在行为反应时指标上, 早期的注意捕获效应消失(实验1), 甚至被反转为注意抑制效应(实验2)。这些结果表明在早期注意选择阶段, 记忆驱动的注意捕获效应不受工作记忆表征情绪效价的影响, 但认知控制会在早期注意捕获之后促使注意快速脱离记忆匹配的干扰刺激, 其作用效果受靶子刺激情绪效价的调节。     

工作记忆表征的激活与抑制状态对注意引导效应的影响

本研究采用双任务范式, 通过定向遗忘任务操纵工作记忆表征状态, 分别在目标无关和目标相关条件下考察工作记忆激活与抑制状态对视觉搜索早期注意引导效应的影响。实验1与实验2发现当工作记忆表征只可能与视觉搜索分心物匹配时(目标无关条件), 处于激活状态的工作记忆表征会引导视觉注意偏向到与之匹配的分心物, 表现出注意引导效应, 而处于抑制状态的工作记忆表征则没有观察到注意引导效应。实验3与实验4发现, 当工作记忆表征有可能与视觉搜索目标匹配时(目标相关条件), 处于激活状态的工作记忆表征能捕获注意, 而处于抑制状态的工作记忆表征只有与视觉搜索目标匹配时, 才表现出对该搜索目标反应的延迟。这些研究的结果表明(1)处于激活状态的工作记忆表征能有效地引导注意偏向到与之匹配的搜索目标或分心物, 并且这种注意引导效应并未受到抑制动机的影响而被消除或反转; (2)处于抑制状态的工作记忆表征能将抑制状态传递到视觉搜索阶段, 并延迟对与之匹配的搜索目标的反应。     

初中生外在学习动机内化的心理机制研究

本研究假设在从事无趣活动时以自主支持方式提供的外部理由动机策略,能够增加参与者对所从事无趣活动任务价值的认同经验,认同经验的程度将会预测后来努力的程度.因此我们测试了努力理由→认同经验→努力的动机中介模型.另外,我们意识到也可能还存在其他动机中介模型,因此我们进一步验证了两个选择模型:努力理由→重要性→自我决定感→努力;努力理由→努力.     

亚词汇水平加工的本质:形旁的语音激活

该研究利用启动命名技术,探讨了汉字加工时是否存在着形旁的语音激活。把含有独立成字的形旁的合体字（如“躲”）作为启动字,与形旁同音的字（如“深”）作为目标字。结果发现,当合体字是低频字时,目标字的命名速度显著加快。高频合体字则没有此效应。集合Ｚｈｏｕ和Ｍａｒｓｌｅｎ－Ｗｉｌｓｏｎ关于声旁语义激活的研究,该文得出结论说,汉字亚同汇水平的加工与词汇水平的加工表现一样,两者之间并无本质性的差别。