功能概念与结构方案的集成方法

提出了一种将功能概念与结构方案集成的图论方法。在设计对象的能量流有向图、邻接矩阵的基础上，通过矩阵变换导出结构设计十分重要的强连接零件集合以及集合的先后顺序，根据通过制定的规则完成结构方案设计，最后进行了实例验证。     

双子矩阵的特征值和特征向量

通过对极大极小（γ，δ）双子在某一特征值下的等价定义，把任意的极大极小（γ，δ）双子化为极大代数下的双子，从而得到计算极大极小〈γ，δ〉双子Ｍ矩阵的特征值与特征向量的方法以及有关的结论。     

Comparison ofPotato Virus Y andPlum Pox Virus transmission by two aphid species in relation to their probing behavior

Two different aphid species,Myzus persicae (Sulzer) andHyalopterus pruni (Geoffroy) (Homoptera: Aphididae), were used to analyze their ability to transmit two different potyviruses,Potato virus Y (PVY) andPlum pox virus (PPV), to pepper (Capsicum annuum) andNicotiana benthamiana plants, respectively. In parallel experiments,M. persicae consistently transmitted both viruses with high efficiency, whereasH. pruni always failed to transmit either virus. This is in contrast to previous reports describingH. pruni as a vector of these potyviruses. Different aphid probing behavior among individual aphids of each species was obtained in electrical penetration graph (EPG) experiments performed on pepper plants. This suggested thatH. pruni did not transmit these potyviruses due to behavioral differences during probing that impeded virus acquisition and/or inoculation. It was found thatM. persicae usually makes its first probe within the first 2 min, whereasH. pruni individuals remained for more than 10 min on the plant before starting to probe. Furthermore,M. persicae individuals displayed their first intracellular puncture during the first minute of probing whereasH. pruni needed ∼ 15 min to penetrate the cell plasmalemma with their stylets. In addition, intracellular stylet punctures occurred very frequently forM. persicae but was a rare event, never exceeding a single one, forH. pruni. The relevance of these findings for the epidemiological spread of potyviruses by different aphid species is discussed. http://www.phytoparasitica.org posting May 14, 2006.     

应用灰色系统理论评价草地质量初探

以草地优良牧草产量、可食牧草产量、载畜量、牧草利用率和覆盖度为主要指标，应用灰色系统理论中关联工分析的方法，对武威地区３２个类型草地质量进行了评价。结果表明，质量最好的草地是山地草甸，质量最关的是干荒漠和荒漠摹。根据分析结果，提出了武威地区草地质量分级的方案。     

结构动力分析的竖向子结构法

从工程设计应用出发提出一种高层建筑结构三维直接动力分析方法，该方法通过利用子结构技术将高层建筑结构规模庞大的空间整体分析模型沿超重方向划分成若干个规模相对很小的竖向子结构，从而最大限度地降低了三＝维动力分析中整体结构动力平衡方程的阶数。     

COMPUTATION OF DISPLACEMENTS AND STRESS-RESULTANTS OF SEMI-RIGIDLY CONNECTED FRAMEWORKS

Displacement of stress-resultants computation technique of semi-rigidly connected steel frames inclucing stiffness matrix method,hand calculation method has been proposed. Hand calculation includes substitute rigid frame method under horizontal loads and moment distribution or decomposed storey method under vertical loads. Connection stiffness for five widely used type has systematically computed and practical values of beam stiffness to column stiffness has been summarized and issued.     

有向(弱)点传递图的乘积

对有向图的四类乘积图的点传递性质进行了研究,得到了有向（弱）点传递图的四类乘积图保持（弱）点传递的性质.     

临汾市农业气候资源灰色关联聚类分析

采用灰色关联聚类分析的方法，对山西省临汾市(地级市)17个县市的农业气候资源进行了聚类评价。结果表明：临汾市可划分为5个农业气候资源区域，且农业气候资源整体水平大致呈现纬度低的地区优于纬度高的地区、盆地优于山区、东部山区优于西部山区的趋势。     

几类图的Kirchhoff指标

求出了基于圈或路的多重星图和多重完全图的Laplace特征多项式,并利用图的Kirehhoff指标与其补图的Laplace特征多项式之间的关系,得到了基于圈或路的多重星图和多重完全图的相关图的Kirch-hoff指标的计算公式．     

基于包络理论的原木截面检测及再现方法研究

介绍了一种应用激光检测技术将原木截面形状再现并计算出原木截面面积的新方法,即应用基于包络理论的原理建立测量系统模型,应用无线数据采集系统采集检测到的数据,然后利用采集到的数据在计算机中进行原木形状的再现,并进行包络线上点坐标的确定以及包络面积的计算,最后对可能出现的结果进行了分析。