精确考虑单质点体系动力二阶效应的反应谱法

为探讨同时考虑P-A和P-δ效应对单质点体系动力响应的影响,从“刚度折减”的角度进行了理论研究和数值计算.文中推导了精确考虑二阶效应的结构侧移刚度折减系数计算公式,指出二阶效应对结构动力响应的影响可以视为结构侧移刚度的折减;提出了精确考虑单质点体系二阶效应的反应谱法的理论公式,并依据抗震设计规范标准反应谱进行了简化;分...     

秋水仙碱与EMS处理坛紫菜离体细胞的初步观察

报道用不同浓度秋水仙碱与EMS（甲基磺酸乙酯）处理坛紫菜离体细胞,对处理后细胞的存活率、分裂和发育再生情况进行观察的结果。试验表明,秋水仙碱处理可显著抑制高体细胞分裂,促进再生藻体生长假根、增加有根苗比例,延缓再生藻体发育成熟与衰亡：浓度≥5×10-3时对离体细胞产生显著地致死和致再生藻体畸形作用。EMS处理也有一定的促进离体细胞再生苗生长假根作用,对细胞分裂抑制作用不明显,也未观察到明显的致畸变或致突变作用。较高浓度EMS处理（2×10-3处理2小时或4×10-3处理1小时）引起细胞急性中毒和严重死亡。     

多机电力系统电压静态稳定性的特征结构分析法

给出了电压稳定性的分类与定义，提出了一种新的多机系统电压静态稳定性的特征结构分析法。该方法不仅可以给出系统静态电压稳定裕度，而且能够直接计算稳定裕度对状态变量和控制变量的灵敏度，同时能够准确地辨别潮流多值解的属性，具有计算简单快速，提供信息全面、直观的优点。     

离散Logistic人口增长预测模型研究

针对人口预测的复杂非线性特点建立了Logistic模型,分析了Logistic方程曲线性质,并研究离散的Logistic模型具有的混沌遍历性,以非线性最小二乘法率定模型参数,用均方根误差等进行模型效果评价,通过实例分析,采用不同方法相互比较,验证了Logistic模型的有效性和适用性.     

论掩饰、隐瞒犯罪所得、犯罪所得收益罪对洗钱罪的补漏

我国刑法修正案（六）在修改了洗钱罪条款的同时,将原来的窝藏、转移、收购、销售赃物罪修改为掩饰、隐瞒犯罪所得、犯罪所得收益罪,弥补了刑法第191条沈钱罪条款涵益砸过窄的固有缺漏。对于木构成开珏法第191条洗钱罪的其他洗钱犯罪行为,可以刑法第312条掩饰、隐瞒犯罪所得、犯罪所得收益罪定罪处罚。     

Conditional automaticity in retrieving multiplication facts: Evidence from Chinese

Adults automatically retrieve multiplication facts in a number matching task, in which participants judge whether the target number is one of the two cue digits presented previously. They are slower in rejecting the number which is the sum or the product of cues than a neutral number. The present study explored, with Chinese adult participants, whether such automaticity in retrieving multiplication facts can be affected by experiential and experimental factors such as learning experience and task set. We classified cue digits into two categories: small number first (the ascending order) and large number first (the descending order), according to whether the smaller or larger digit was presented on the left of the other. Experiment 1 found that product numbers were more difficult to reject than non-product numbers. Moreover, the order of cues played a role in modulating the magnitude of the interference effect, with ascending order conditions having larger interference than descending order conditions. Experiment 2 added a task-irrelevant addition or subtraction sign between the two cues and replicated the pattern of effects in Experiment 1, although the interference effects were significantly reduced. Experiment 3 instructed participants to judge whether the target number was the sum of the two cue digits. No interference effect was found for the target that was the product of cues. These findings suggest that the retrieval of multiplication facts, albeit automatic, can be influenced by learning experience (cue order effects in Experiments 1 & 2), the compatibility of the cuing context with the stored template information (reduced interference effects across Experiments 1 & 2), and task set (elimination of interference effects in Experiment 3). Retrieving multiplication facts is therefore conditionally automatic.     

三自由度并联平台机构运动性质研究

针对目前国际上广泛研究的３—ＲＰＳ平台机构的运动性质作出分析．讨论了基面上三回转副共面或共面汇交等不同情况下的运动性质．以及该类机构在不同位形下运动性质的变化．从理论上深入地讨论了反螺旋力线矢与允许运动的关系．     

金属中电子结构的密度泛函方法与正电子湮没技术

以密度泛函理论为基础,利用简化的胶体模型,在局域密度近似下研究金属中的空位型缺陷的电子结构和以正电子寿命为表征的缺陷谱.结果表明,随着空位尺度的增加,正电子寿命亦增加并直到饱和值.     

物体分层制造中的网格划分研究

分析了物体分层制造中用网格分离废料的原理 ,提出了一种模块化的网格划分方法 ;各模块是面向模型特征的 ,可根据待成形模型的特点把需要的模块进行组合 ,既能满足废料的可分离性的要求又能提高成形的效率