二阶可加混料模型的R-最优设计

阐明了依据线性回归模型参数联合估计的矩形置信区域所提出的一类具有崭新应用价值的最优设计准则R最优设计准则,介绍了该准则的等价定理和性质·同时针对(q-1)维正规单纯形上的二阶可加混料模型,证明了其参数估计的R最优设计柱点为单纯形的顶点和边界中心点;随着q的增加,边界中心点逐渐由一维过渡到二维中心点     

屈服强度800 MPa的低碳微合金钢

研究了不同成分特征的含锰含碳微合金钢通过控轧控冷后回火的组织与力学性能,Mn含量为1．7％－2．3％的试验钢轧后经快冷和中温回火获得了高强度和一定的塑性、韧性,其中含0．06％,2．3％Mn,0．21％Al和微量Nb,Ti,B的快冷回火钢屈服强度（σ0．2）超过800MPa,延伸率大于4％。室温冲击韧性134－174．5J／cm^2,－40℃冲击韧性为103－110J／cm^2,具有由变形奥氏体转变成的细小贝氏体组织。     

基于连续小波变换去除奇异信号方法

提出了高维小波变换的一般形式,在一系列的多维小渡变换中,选择一个适当的小波变换,对小波正变换和逆变换进行离散,构造简单易行且有效的数值计算方法．仿真实例表明:对同时带有白噪声和野值的二维信号进行离散的小波正变换和小波逆变换处理,可以彻底地去除信号中白噪声和野值,重建原有信号．     

多叠氮双磷酸酯的合成

通过酯化,开环及亲核取代等反应,合成了一种新型含能添加剂－多叠氮双磷酸酯。所合成的化合物经红外,核磁,质谱及元素分析鉴定,证明为２,２－二（氯甲基）－１,３－亚丙基四（β－叠氮乙基）双磷酸酯。该多叠氮双磷酸酯为无色粘稠液体,氮含量高,热安定性好,可望作为火炸药的含能添加剂。     

EFFECTIVE EIGENVALUE FOR THE INTENSTTY CORRELATION OF A LASER WITH MULTIPLICATIVE WHITE NOISE

Exact formulas of the effective eigenvalues in a single - mode laser with multiplicative white noise are derived through the full saturation laser model and the third order laser model . Compared with the numerical computations and the. experimental measurements, excellent agreement is obtained for the full saturation theory, and hence the cavity decay rate for the experimental electric field can be concluded easily. Relatively large, errors occur in the third order theory and the measured data.     

运用彝药配制生物饲料

就彝药的发展、发掘和现状进行了简要概括，提出了彝药的另一发展领域是“彝药生物饲料”，并对彝药生物 饲料的作用、意义、工艺流程、市场发展前景等相关问题作了较为全面的论述。     

Outliers,level shifts,and variance changes in time series

Outliers, level shifts, and variance changes are commonplace in applied time series analysis. However, their existence is often ignored and their impact is overlooked, for the lack of simple and useful methods to detect and handle those extraordinary events. The problem of detecting outliers, level shifts, and variance changes in a univariate time series is considered. The methods employed are extremely simple yet useful. Only the least squares techniques and residual variance ratios are used. The effectiveness of these simple methods is demonstrated by analysing three real data sets.     

The chatfield-prothero case study: Another look

The Chatfield-Prothero case study in time series, ‘Sales of a company X’, is analysed from a perspective different to that of the authors. More accurate forecasting performance for these data is obtained by adopting the following two tactics: (1) shifting from a problem in transformation of the original series to one of seasonality adjustment; (2) assuming a mixed seasonality type model in contrast to employing a multiplicative assumption.     

用阻抗方法分析添加剂对Ni—P非晶态电沉积的影响

应用交流阻抗方法,研究添加剂对非晶态电沉积的影响是一种较新的手段。本文采用阻抗的方法初步研究了不同类型添加剂在Ni—P非晶电沉积中的作用机理。结果表明,洗涤剂作为Ni—P电镀添加剂可以改善其镀层质量,有利于非晶镀层的形成。该研究方法有效可行值得重视。     

硫酸盐溶液制取铁-锰合金镀层的研究

通过对硫酸盐溶液的研究来解决铁－锰合金沉积问题，研究了有机添加剂对阴极过程的影响。确定了合理的溶液成分，反应后可得到细密白色的合金沉淀，实验还确定了适当的电流密度，在此条件下可得到优质白色镀层。