三峡外迁移民社会心理应激的实证分析

通过对三峡外迁移民与当地居民心理应激状况进行现场调查,与当地居民相比较发现,三峡外迁移民具有更多消极情绪,更多采取消极应对方式,应激总分远远大于当地居民。三峡移民的社会支持低于当地居民。为了减轻对移民心身健康造成的应激,应从社会管理、技术服务、心理咨询等方面帮助移民,以适应环境,保持心身健康。     

一种改进的分层并行演化算法(英文)

提出了一种改进的分层并行演化算法。针对传统算法中"同构子种群"和"同步通信"所引发的问题,新算法构建了异构模型,并将各子种群充分连接。子种群一旦满足迁移条件,便可按照预设的迁移模式实施异步迁移。仿真实验结果表明,本文提出的新算法有效地解决了"征服问题"和"无效问题",避免了算法的过早收敛,提高了算法的效率。     

The Sign of Unity and the Bond of Charity: On the Eucharist as a “Taskmaster” in the Context of Global Migration

What does the Eucharist—seen as the source and summit of Christian life and the “meeting‐point on which all the issues of theology converge” (Y.Brilioth) have to do with migrants and refugees? Regardless of how we celebrate the Eucharist, we all have to negotiate ways of living together within the interdependent destiny of globalization. Precisely within this global conviviality, the sacramental and mystical radicalism of unity and love that Martin Luther advocated in his eucharistic theology invites serious consideration but also equally serious contextualization.     

Migration and Cultural Orientation: An Empirical Test of the Psychoanalytic Theory in Chinese Americans

The psychoanalytic literature suggests migration entails an intra-psychic challenge of separation–individuation that necessitates the assistance of internal and external objects. While this has been illustrated by anecdotal data and clinical case material, it has not been previously tested in the general migrant community. This study examined three Chinese-American groups who varied in the availability of external objects (i.e., primary caretakers) and stability and solidity of internal object and self representations due to varying developmental stages at the time of migration, and assessed whether, as predicted by some psychoanalytic writers, they would have differential need to embrace their native culture to support their transition. Results showed that unaccompanied minors who migrated without their parents during adolescence evidenced a stronger Chinese cultural orientation than both accompanied minors who migrated with their parents during childhood (perhaps due to less access to external objects) and unaccompanied adults who migrated without their parents during adulthood (perhaps due to less well internalized objects), lending empirical support for the psychoanalytic postulation. Implications of the findings for future research and intervention are discussed.     

Individual Differences In Intra-Individual Variability

For each of 75 Ss several estimates of intra-individual variations were calculated for each of 4 motor skills. The reliability of intra-individual variation for these data, estimated from Pearson productmoment correlations, ranged from r = .31 to r = .51 (in all cases p < .05). It was also found that in 3 of the 4 skills, intra-individual variation correlated significantly (r = .36, .54, .55) with mean performance level. Second order partial correlations, holding constant the effect of mean performance level, were then used to estimate the reliability of intravariation. These correlations were statistically significant and ranged from r = .27 to r = .34. When correlations of intra-individual variation were calculated among the four skills it was demonstrated that intra-individual variation was approximately 95 to 100% task specific.     

On elastic–viscoplastic modeling of nanotwinned metals based on coupled intra-twin and twin-boundary-mediated deformation mechanisms

An elastic–viscoplastic model has been developed for nanotwinned (nt) metals based on coupled intra-twin and twin-boundary-mediated (TBM) deformation mechanisms. The grain-size dependence of intra-twin plasticity was incorporated in the proposed model to determine the transitional twin thickness corresponding to the maximum strength. In addition, the joint distribution of grain size and twin thickness was also taken into account to simulate the microstructure of nt metals. The results obtained show that the TBM deformation mechanism dominated at low strain rate and small twin thickness, and that the grain-size and twin-thickness distributions had significant influence on the macroscopic behavior of nt metals. A linear relation between the transitional twin thickness and grain size is predicted by the proposed model, which is in good agreement with the results obtained from three-dimensional molecular dynamics simulations and experiments.     

视觉返回抑制的实验范式

综述了视觉返回抑制的实验范式及相关研究。Posner和Cohen在研究视觉空间注意内部转移过程的实验中发现了返回抑制现象,这一实验被视为经典的返回抑制实验。后来通过大量的研究,形成了线索-靶子和靶子-靶子两大实验范式。线索-靶子范式中根据线索呈现方式、任务类型、刺激呈现方式等方面的不同,又可以细分为一系列小的范式和方法;而靶子-靶子范式的应用主要集中在与辨别任务的结合,以及跨通道的研究中     

不同作业阶段的分配注意对返回抑制的影响

在双作业条件下,利用线索－靶子模式进行了两个返回抑制实验,实验一应用简单分心刺激,实验二应用复杂分心刺激。两个实验均在呈现阶段或／和靶子呈现阶段安排分心作业,以大学生为被试,其主作业为觉察星号,尽快按键作出反应。结果表明：（１）在简单分心作业条件下,返回抑制依然存在,但数值减少,在复杂分心作业条件下,返回抑制全部消失。（２）无论分心作业如何,线索呈现阶段或／和靶子呈现阶段的分散注意对返回抑制所产生     

工作记忆对基于颜色的注意返回抑制的影响

前人研究发现返回抑制与工作记忆间存在特异性关系,即某种特定类型的返回抑制只依赖于此种工作记忆。然而,这些研究都只考察了空间和客体返回抑制。为了验证两者间的这种特异性关系在其他类型的返回抑制中仍然存在,本研究考察了工作记忆对基于颜色的返回抑制的影响。结果发现颜色返回抑制只受颜色工作记忆任务的影响,不受形状工作记忆任务影响,这为返回抑制和工作记忆特异性关系的普适性提供了进一步证据。