烃类水合物高压密相波形板壁防火材料设计

设计防火材料中,对防火特性基质的合成材料的设计研究是关键,烃类水合物在持续受热条件下具有较好的阻燃性能,烃类水合物是由碳和氢两种元素组成的有机化合物,是具有一定潜质的选材原料。为解决烃类水合物高压密相波形板壁隔热防火材料设计中关键技术问题,开展对烃类水合物高压密相波形板壁隔热防火材料设计的研究和实验工作,采用高压密相波形板壁设计方法,合成出Ui O-66(Zr)烃类水合物隔热防火材料。基于变压吸附分离技术,分析材料的热稳定性、化学稳定性、力学稳定性和热降解特性。利用烃类水合物高压密相波形板壁隔热技术实现对高热稳定和水稳定的隔热防火材料研究。实验得出,当样品升温速率低于加热系统的升温速率,样品受到外部加热的作用,发生破乳和水分挥发,实现阻止燃烧的功效,有效提高阻燃性能,采用该隔热防火材料,阻燃和耐高温性能较优越。     

Emotion recognition in fathers and mothers at high-risk for child physical abuse

Objective

The present study was designed to determine whether parents at high risk for physical child abuse, in comparison with parents at low risk, show deficits in emotion recognition, as well as to examine the moderator effect of gender and stress on the relationship between risk for physical child abuse and emotion recognition.

Methods

Based on their scores on the Abuse Scale of the CAP Inventory (Milner, 1986), 64 parents at high risk (24 fathers and 40 mothers) and 80 parents at low risk (40 fathers and 40 mothers) for physical child abuse were selected. The Subtle Expression Training Tool/Micro Expression Training Tool ( [Ekman, 2004a] and [Ekman, 2004b]) and the Diagnostic Analysis of Nonverbal Accuracy II (Nowicki & Carton, 1993) were used to assess emotion recognition.

Results

As expected, parents at high risk, in contrast to parents at low risk, showed deficits in emotion recognition. However, differences between high- and low-risk participants were observed only for fathers, but not for mothers. Whereas fathers at high risk for physical child abuse made more errors than mothers at high risk, no differences between mothers at low risk and fathers at low risk were found. No interaction between stress, gender, and risk status was observed for errors in emotion recognition.

Conclusions and practice implications

The present findings, if confirmed with physical abusers, could be helpful to further our understanding of deficits in processing information of physically abusive parents and to develop treatment strategies specifically focused on emotion recognition. Moreover, if gender differences can be confirmed, the findings could be helpful to develop specific treatment programs for abusive fathers.     

世纪之交的教育反思(二)

站在世纪之交的历史节点上,从不忽视职业教育的角度反观一个世纪以来的中国教育,在中国教育传统和外来教育影响的交变作用下,它经历着教育认识的嬗递与变革、教育方术的发展与富集、教育本体的颠覆与重构的巨大变化过程.这是中国社会由传统向现代整体演进的一个有机组成部分.这个过程远远没有结束.认识这个过程,对于正确把握我国教育的发展规律、创造出新世纪全面适应我国经济与社会发展和全体社会成员自身发展需要,包括普通教育和职业教育、基础教育和高等教育等各级各类教育的"让人民满意的教育",具有重要意义.     

人力资源管理的风险研究

随着知识经济时代的到来,人力资源管理在企业经营管理中的作用变得更加重要。如何安全高效地进行企业人力资源管理也就成了企业十分关注的问题。本文就企业人力资源管理活动中可能出现的风险问题展开论述,按照风险识别、风险防范的顺序对人力资源管理风险进行了分析和研究,并分别从决策、制度以及法律三个方面提出人力资源管理风险的防范思路。     

智能车辆的交叉口数字信号灯检测与识别

为了保证智能车辆在交叉口内的诱导行驶,提出了一种交叉口信号灯检测与识别方法．首先利用Hough变换检测交叉口内的停车线,然后采用颜色空间变换检测红、黄、绿三色信号灯,最后建立自联想存储器以识别切分出来的信号灯时间字符．通过20个实际交叉口场景测试数据验证,采用所提出的方法,停车线检测正确率达90％,信号灯检测正确率为85％,在信号灯字符正确分割出来的基础上,字符的识别率达97％．结果表明提出的方法能够十分有效地进行数字信号灯的检测,并具有足够的鲁棒性识别“破损”及带噪声的字符．     

Confirmatory factor analysis of word recognition and process measures in the Colorado Reading Project

Measures of word recognition (REC) and two component skills, phonological coding (PHON) and orthographic coding (ORTH), were subjected to multivariate behavioral genetic analysis. Data were obtained from a sample of identical and fraternal twin pairs wherein at least one member of each pair was reading disabled (RD), and from a sample of twins wherein both members of each pair read in the normal range. Confirmatory factor analysis was used to fit the genetic, common environmental, and specific environmental covariance components for REC, PHON, and ORTH within the RD and normal simples. The resulting heritability estimates for REC, PHON, and ORTH were 0.59, 0.41, and 0.05 in the RD sample, and 0.35, 0.52, and 0.20 in the normal sample. After dropping the nonsignificant common environment parameters from the models, the genetic correlations between REC and PHON and between REC and ORTH were respectively 0.81 and 0.45 in the RD sample, and 0.68 and 0.45 in the normal sample. Differences between the genetic correlations were significant in the RD sample (p<0.005), marginally significant in the normal sample (p<0.10), and highly significant in the combined sample (p<0.001), indicating that genetic influences on individual differences in REC are more strongly related to genetic variance in PHON than in ORTH. These results are consistent with previous demonstrations of substantial genetic covariance between the disabled group's deficits in REC and PHON, but not between REC and ORTH (Olson et al., 1989; Olson and Rack, 1990).     

菲涅耳波带片成像时的像点分析

菲涅耳波带片可使入射光会聚起来，产生极大的光强，使点光源形成一系列的实像点和虚像点，其作用如同透镜成像。利用半波带分析法可分析菲涅耳波带片对称轴上的点光源通过菲涅耳波带片成像时像点在对称轴上的分布及 焦距的变化情况。     

从烂版废液中回收硫酸铜实验的改进

改进了从烂版废液中回收硫酸铜的实验。并且回收的硫酸铜纯度在95％以上。原料中的铜近于定量回收，污染也小，并进一步指出了工业应用的可能性。     

“情商”与足球心理训练

采用问卷调查、文献资料法，对“情商”进行评定，得出“情商”的高低，也就是理智控制感情，道德规范行为，纪律约束冲动，思维管理情绪的能力，它能在一定程度反应足球运动员心理素质。为有目的地训练和提高“情商”，进而全面提高运动员心理素质，最终取得优异的比赛成绩提供了借鉴。     

基于面部图像的非接触式婴儿心率监测

为实现便捷、可靠的日常婴儿心率实时监测,提出一种基于面部图像的非接触式婴儿心率实时监测方法。首先引入欧拉视频放大技术,对一定时间间隔内视频的每一帧图像进行颜色增强处理,从而改善婴儿面部颜色变化微弱、所含心率信息不明显的问题;然后,通过Adaboost算法从每一视频帧中识别出婴儿面部,并从婴儿面部选取脸颊区域作为敏感区域以提取脉搏波信号,以此为基础提出一种改进的反射光强模型,抑制日间因环境光变化引起的干扰以及运动噪声干扰,提高脉搏波信号信噪比;此外采用摄像头的红外自主光源,通过一种基于相空间重构的单通道独立成分分析法分离夜间脉搏波信号的运动噪声,解决因夜间光照条件差引起的婴儿心率监测困难的问题;最后开发整个系统上位机应用程序,并通过实验验证该方法正确性和有效性。