反射振幅估计的相容性

本文基于Ｒｏｂｉｓｏｎ褶积模型和Ｂｅｒｎｏｕｌｌｉ－Ｇａｕｓｓｉａｎ反射列，在极大似然准则和某些假设下，证明了当信噪比趋于无穷大时，振幅估计收敛于它的真值，振幅估计是相容的。     

二阶拟线性椭圓型Euler方程组解的Pohozaev型恒等式及其应用

本文对于二阶椭圆型Euler方程组 -∑D_αF_(q_α~i)(x,u,Du)+F_(ui)(x,u,Du)=0得到了一些积分恒等式,利用这些恒等式证明了某些方程组非平凡解的不存在性。     

自由曲面前照灯近光配光的防眩目研究

从驾驶员心理学和生理学角度探讨了汽车夜间会车时眩目的机理．由于传统的前照灯配光设计停留在二维的层面上，设计周期长，且配光效果差，很难达到防眩目的要求．本文通过Reflector CAD软件反求出了符合ECE法规配光要求的自由曲面前照灯反射镜的三维模型，该模型可以直接用于数控程序的编制，减小了前照灯的设计成本和设计周期，利用TracePro软件对模型进行近光配光的仿真实验，通过光线追踪的方法避免了实际配光实验时调整反射镜配光所需的反复制造过程，同时又保证了前照灯防眩目的效果。     

Expression and modulation of connective tissue growth factor in renal interstitial fibrosis

CTGF, a member of the CCN family of immediate early genes, is a recently discovered profibrotic growth factor, which is involved in many pathophysiologic procedures. CTGF acts as a downstream effector of TGF-β acting on interstitial cells to enhance the progression of fibrotic renal diseases. It has been shown that CTGF gene expression can be induced or blocked by some kinds of cytokine and drugs. It is an interesting candidate target for future intervention strategies of renal interstitial fibrosis.     

香鱼人工育苗技术

根据作者多年来香鱼人工育苗的实践经验，总结了香鱼人工繁殖和苗种培育中关键性的技术。     

两端不等弯矩作用下薄壁梁柱的弯扭屈曲

本文采用Ｒａｙｌｅｉｇｈ－Ｒｉｔｚ法求解两端不等弯矩作用下单轴对称开口薄壁截面梁柱弯扭屈曲临界荷载，分析中考虑了三种常见的边界条件以及屈曲前变形的影响，将本文弯扭屈由临界荷载理论值与试验值比较，吻合较好。     

Correlated Responses in Two Traits when Selection is Practised on their Ratio

In many fields of application in plant breeding and crop science, ratios of two component traits X and Y are of interest (harvest index in cereals, leaf-to-stem ratio in forage legumes, height-to-diameter ratio in forest trees etc.). When selection is practised on the ratio X/Y of two traits X and Y, the experimenter may be interested in the resulting changes of both trait means. Based on improved approximations for the covariances between X and X/Y and between Y and X/Y and for the variance of X/Y the changes in the means of X and Y can be predicted by applying the regression approach from conventional selection theory. Explicit expressions for these correlated responses in X and Y when selection is practised on their ratio X/Y are derived and discussed. The different outcomes (decrease, zero change or increase) for the selection pressures on X and Y are characterized by phenotypic coefficients of variation of X and Y, phenotypic and genotypic correlations between X and Y and heritabilities of X and Y.     

哈尔滨市工农兵钢箱索梁桥模型试验研究

对哈尔滨市工农兵钢箱索梁桥的模型进行了试验和分析。结果表明,该桥设计采用的理论与试验结果基本相符,为桥梁的修复设计提供了可靠依据。     

钢管混凝土拱桥的施工监控技术

钢管混凝土是由混凝土填入薄壁钢管而形成的一种组合材料。在桥梁结构上,钢管混凝土主要应用于拱桥。目前,大跨度钢管混凝土拱桥主要采用缆索吊装-斜拉扣定施工新技术,拱桥的线形通过实测每节钢管拱的标高及拱轴线位置,并借助扣索实施动态调整来保证。为此,介绍了钢管混凝土拱桥施工过程的监控技术,从而指导施工,以确保拱桥建成后满足设计要求。