基于van der Waals状态方程的剩余自由能模型

结合 Wong- Sandler的混合规则 ,即在无穷大压力下剩余 Helmholtz自由能与无穷小剩余 Gibbs自由能近似相等的关系 ,给出了一个基于 van der Waals状态方程的剩余自由能模型 ,由此得到可以描述汽液相平衡的活度系数模型。通过对 35个体系的考核表明 ,该模型可以较好的关联实验数据 ,包括极性与极性物系 ,其结果好于 Wilson、Mar-gules、NRTL与 Uniquac等模型的计算结果。同时 ,因为该模型基于 Wong- Sandler的混合规则 ,因此可以实现在理想溶液中 ,由 Wong- Sandler混合规则到 van der Waals混合规则平滑过渡。     

人体运动非监督聚类分析

提出了一种基于非监督学习的人体运动分析方法.该方法通过使用MDL准则约束下的HMM模型对连续运动序列进行分割和聚类,并实现对运动序列的自动分割和标记.该方法由两步组成,首先通过聚类将连续运动离散化,并按照最小描述长度准则在离散域得到初始解.在此基础上,返回到连续域训练MDL准则约束下的HMM模型.使用HMM模型可以进一步利用原始序列中的动态信息获得更精确的最终结果.通过对实际人体运动序列进行的实验验证了方法的有效性.     

信息转接死锁避免的动态优化算法

对于动态传输路径，给出了每个结点至少两个缓冲的信息转接网死锁避免问题，所提出的死锁避免算法从缓冲利用的角度看是优化的。同时给出了死锁无关的证明及其条件，这对于并行计算处理问题是有益的。     

一类非线性时滞系统的稳定化控制器设计研究

针对一类单控制滞后的非线性时滞系统,利用非线性状态变换的方法进行非线性变 换,得到一线性时滞系统模型;然后利用一带控制记忆的积分变换进行精确无滞后化变换,得 到一无滞后的线性能控标准型系统,从而利用分步设计的思想.实现非线性时滞系统的稳定 化控制.一数值例子的仿真研究说明了该方法的有效性.     

煤焦油质量的影响因素及对策

通过对涟钢煤焦油质量变差的原因分析，认为其关键因素是焦炉装煤不满．炉顶空间过大和温度过高，造成荒煤气中游离碳含量太高。据此。逐步采取了相应的措施，使焦油质量得到有效改善。     

关于标准生成吉布斯自由能的一种计算方法及绘图实例

根据目前国际上流行的数学和工程计算软件IVIATCAB能很好地帮助工程师和科学家解决实际工程和技术问题的特点，针对热力学标准生成吉布斯自由能对材料合成和加工过程中的物质的反应和相变分析具有密切关系的情况，介绍了一种用MATLB软件计算标准生成吉布斯自由能及绘图的简便方法，并通过实例进行了说明。     

Links Between Sex-Typed Time Use in Middle Childhood and Gender Development in Early Adolescence.

The authors studied sex-typing in the kinds (e.g., sports, handicrafts) and social contexts (same- vs. other-sex companions) of children's free time activities, and the links between sex-typed activities and gender development over 2 years. Participants were 200 White, working- and middle-class children (103 girls, 97 boys; mean age = 10.86 years). In annual home interviews, children rated their self-esteem, gender role attitudes and sex-typed personality qualities, academic interests, and school grades. During 7 nightly phone interviews each year, children reported on their activities. Boys were more sex-typed than girls in their peer activities, and children were least sex-typed in their activities with siblings. Sex-typed activities in middle childhood predicted individual differences in gender development in early adolescence (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Effect of the Length of To-Be-Remembered Lists and Intervening Lists on Free Recall: A Reexamination Using Overt Rehearsal.

In 3 experiments, the authors investigated the effects of to-be-remembered (TBR) and intervening list length on free recall to determine whether selective rehearsal could explain the previous finding that recall was affected only by TBR list length. In Experiments 1 (covert rehearsal) and 2 (overt rehearsal), participants saw 5- and 20-word lists and had to recall the list prior to that last presented list. In Experiment 3, either 1 or 2 lists were presented, and recall of TBR list was postcued. Recall proportion decreased with increased TBR list length. Moreover, the authors found extended recency effects when recall was replotted by when words were last rehearsed (Experiments 2 and 3) and an effect of intervening list length when rehearsal was reduced (Experiment 3). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

UG应用技法

通过使用UG规律曲线和自由曲面建立的命令，一步一步掌握UG高级建模方法。     

Advanced HSLA Steels for Automotive Use

Characteristic HSLA steels for automotive use are introduced in which both of precipitation and microstructure is controlled to obtain suitable mechanical properties.For outer panels such as fender,the combination of low yield strength,high tensile strength and deep-drawability were realized by controlling the distribution of NbC and precipitation free zone.The other steel,developed for chassis parts such as lower arm,utilizes extremely fine interphase precipitation to obtain high yield strength and excellent hole expansionability.Both steels have contributed to the reduction of weight in car body.