A mechanism for elliptic-like bursting and synchronization of bursts in a map-based neuron network

A system consisting of two Rulkov map-based neurons coupled through reciprocal electrical synapses as a simple phenomenological example is discussed. When the electrical coupling is excitatory, the square-wave bursting can be well predicted by the bifurcation analysis of a comparatively simple low-dimensional subsystem embedded in the invariant manifold. While, when the synapses are inhibitory due to the artificial electrical coupling, a fast–slow analysis is carried out by treating the two slow variables as two different bifurcation parameters. The main result of this paper is to present a mechanism for the occurrence of a kind of special elliptic bursting. The mechanism for this kind of elliptic-like bursting is due to the interaction between two chaotic oscillations with different amplitudes. Moreover, the generation of antiphase synchronization of networks lies in the different switching orders between two pairs of different chaotic oscillations corresponding to the first neuron and the second neuron, respectively.     

高中生学习力的探索研究

采用自编学习力问卷,对3245名高中生进行问卷调查,以探明高中生学习力的基本结构和特征。结果发现：（1）高中生的学习力可以4个维度表征,即：学习方法运用力、学习态度调控力、学习自控力和提问互惠力。（2）高中生的学习力与学业成绩关联显著,学业成绩优秀的同学具有较高水平的学习力测评得分;在学习力的4个维度上,成绩较差同学的学习力测评得分显著低于优秀与中等同学。（3）高二学生的学习态度调控力测评分显著高于高一学生,女生的提问互惠力测评分显著高于男生。（4）成绩优秀的高二学生学习方法运用力测评分显著高于高一学生,成绩优秀和中等的高二学生的学习态度调控力测评分显著高于高一学生。     

Predicting Chinese international students’ acculturation strategies from socio‐demographic variables and social ties

Different acculturation strategies (i.e. integration, assimilation, separation and marginalization) tend to contribute to different adaptation outcomes for international students. The current study examines Chinese international students’ acculturation strategies under the influence of sociodemographic variables and social ties they developed in the host country. A group of Chinese international students in Belgium (N = 183) participated in an online survey. The results indicate that integration was the most commonly adopted strategy among Chinese international students in Belgium, followed by separation, marginalization and assimilation. The results from three separate multiple regressions show that English proficiency, local language proficiency, prior adaptation experience and female were significant predictors of Chinese students’ social ties (i.e. host‐national ties, international ties and co‐national ties). The discriminant analysis identified host‐national ties, international ties, co‐national ties, local language proficiency and prior adaptation experience as important variables that can distinguish Chinese students’ acculturation strategies.     

<Emphasis Type="Italic">DSM-5</Emphasis> Posttraumatic Stress Disorder Symptom Structure in Disaster-Exposed Adolescents: Stability across Gender and Relation to Behavioral Problems

Given the significant modifications to posttraumatic stress disorder (PTSD) symptom criteria from DSM-IV to DSM-5, a better understanding of the dimensionality underlying DSM-5 PTSD symptoms among adolescents is needed. However, to date, whether gender moderates the latent structure of DSM-5 PTSD symptoms in youth remains unclear. Meanwhile, little is known about how distinct PTSD dimensions relate to adolescent behavioral problems. The aim of this study was to fill these gaps. A sample of 1184 disaster-exposed Chinese adolescents (53.8 % girls) with age ranging from 13 to 17 years (M = 14.3, SD = 0.8) completed the PTSD Checklist for DSM-5, and the Withdrawn, Aggressive Behavior, and Delinquent Behavior subscales of the Youth Self-Report. Confirmatory factor analyses revealed that the seven-factor hybrid PTSD model provided the best fit to the data for both girls and boys. Measurement equivalence of this model held across gender, although girls had higher mean scores than boys on some factors. Differential patterns of associations emerged between PTSD dimensions and behavioral problems, with anhedonia symptoms most strongly relating to social withdrawal, and externalizing behavior symptoms most strongly relating to aggression and delinquency. These findings further support the gender invariance and external criterion validity of the newly refined hybrid model that best represents DSM-5 PTSD symptom structure in youth, and carry implications for accurate assessment, diagnosis, and gender comparison of DSM-5 PTSD symptomatology, and potential symptom targets for PTSD intervention among adolescent disaster survivors.     

高中生学习力的影响因素研究*

采用自编学习力及学习力影响因素问卷,对3056名高中生进行调查,建构学习力与影响因素的数学模型,探究各影响因素对高中生学习力的影响路径。结果发现,（1）影响高中生学习力的因素有六个,分别是认知能力、动机水平、精神状态、人际协调、身心优势感和学习氛围。（2）对学习力解释的贡献率大小排列依次为：精神状态、动机水平、学习氛围、认知能力、身心优势感和人际协调。（3）学习方法运用力主要受动机水平、精神状态、学习氛围、认知能力等4因素的影响;学习态度调控力主要受到精神状态、动机水平、学习氛围及认知能力等4因素的影响;学习自控力主要受精神状态的影响;提问互惠力主要受认知能力、精神状态、动机水平及学习氛围的影响。     

项目功能差异在跨文化人格问卷分析中的应用

利用IRT的等级模型调查了中日两组被试关于SHIBA简易人格量表中“环境敏感性”的项目功能差异(DIF)的现状。研究发现：（1）量表中DIF的项目比例大(3/4);（2）DIF与项目内容、阈值有关而与区分度大小关系不大;（3）DIF项目间的日方特征曲线较之中方有较强的整合性。该研究利用DIF研究结果对跨文化的人格比较作了新尝试。最后提出了关于深化DIF研究的新课题     

生态伦理本体的反思与重构

在目前的生态伦理学研究中,无论是主张以人为伦理本体还是强调以自然为伦理本体,都属于黑格尔所嘲笑的原子式的没有精神的思维方式.超越这种有限思维在于将这两种对立的生态伦理本体统一起来,形成一种生态人性的伦理本体.由于这种生态人性是人同自然界的本质一体化,人为中心即自然为中心,自然为中心即是人为中心,于是就消解了人类中心论与自然中心论的对立,并成为二者存在的真理.     

规则分类中刺激非规则特征突显条件下的样例效应

用Allan和Brooks的实验范式,采用2（学习轮次：5轮、10轮）×2（项目类型：旧项目、新项目）×2（项目匹配性质：正向匹配、反向匹配）混合实验设计,研究规则分类中非规则特征突显条件下的样例效应。结果发现,在学习5轮的条件下,获得了错误率上的样例效应,在学习5轮和10轮的条件下都没有获得反应时上的样例效应。实验得出样例效应的产生和突显的非规则特征有关的结论。     

触觉刺激对触觉注意启动作用的研究

目的：探讨触觉刺激对触觉注意的影响,以揭示选择性注意的机制。方法：利用在体电生理记录技术,记录了288个丘脑腹侧基底核（ventrobasal nuleus of thalamus,VB）神经元放电活动,并着重考察了不同强度触觉刺激对丘脑神经元细胞自发放电活动的影响。结果发现：触觉刺激对大部分的触觉神经元的自发放电活动均有抑制性影响。提示触觉刺激降低背景噪声可能是触发选择性触觉注意的神经机制。     

精神分裂症患者团体绘画艺术干预

探讨团体绘画艺术治疗对精神分裂症患者生理、心理和社会功能康复效果。86名精神分裂症住院患者被随机分配到干预组或对照组。干预组被试接受团体绘画艺术干预活动,对照组从事其他康复活动。结果发现,干预组被试阳性与阴性症状量表总分低于对照组被试,大体评定量表分数高于对照组被试,自我概念总分高于对照组被试,生活质量问卷的躯体功能、心理功能和社会功能维度高于对照组被试。团体绘画艺术干预可以缓解精神分裂症患者的精神症状,促进患者自我概念和生活质量的提升。