ABS/PVC/Rubber合金的微结构和表面反射率关系研究

用分析电子显微镜的TEM和SEM模式观测了高分子合金材料ABS／PVC／Rubber的微观结构，并使用电子测色配色仪测定其表面对不同光波波长的反射率，试图说明其微结构形态与表面反射率之间的关系。     

X－ray reflectivity investigation of the foam bilayer film formed by hexaethylene glycol dodecyl ether

When the thickness of soap foam film varies in adefinite region, color changes of a soap bubble will be observed due to the interference of light. Black soap films are the final stages of thinning of soap films due to the drainage of water in the absence of evaporation and are generally formed from solutions of an ionic surfactant in the presence of salt. After a bubble is formed, in the beginning the soap film is relatively thick and it appearswhite; then the film thins gradually and finally …     

Label-free and real-time detection of specific binding of IgG proteins by oblique-incidence reflectivity difference method

The entire interaction process between anti-mouse immunoglobulin-G (IgG) and mouse IgG with a concentration range from 1 to 0.25 mg/mL has been label-free detected by the oblique incidence reflectivity difference (OIRD) method.We achieved the two-dimensional scanning images of OIRD Re{△ p △s } intensities before and after interactions as well as the curves of reaction dynamic processes.The experimental results suggest that OIRD method not only can label-free distinguish the different concentrations of proteins and detect biological microarrays,but also can real-time monitor the kinetic processes of biomolecular interactions.     

Recursive estimation and forecasting of non-stationary time series

The paper presents a unified, fully recursive approach to the modelling and forecasting of non-stationary time-series. The basic time-series model, which is based on the well-known ‘component’ or ‘structuraL’ form, is formulated in state-space terms. A novel spectral decomposition procedure, based on the exploitation of recursive smoothing algorithms, is then utilized to simplify the procedures of model identification and estimation. Finally, the fully recursive formulation allows for conventional or self-adaptive implementation of state-space forecasting and seasonal adjustment. Although the paper is restricted to the consideration of univariate time series, the basic approach can be extended to handle explanatory variables or full multivariable (vector) series.     

地物杂波特性的分析及抑制

本文讨论杂波的频谱分布,目标特性。FFT分析指出杂波频谱的数学模型及杂波频谱截止频率与风速的关系。设计一实用的抑制杂波系统,利用其正,负多卜勒分别处理为正、负电平,长时间积分可检测强杂波中的慢速目标。对CW雷达回波振幅统计特性作了理论探讨。     

周期图法的功率谱估计

功率谱估计是数字信号处理的重要研究内容之一。对目前用得较多且最具代表性的周期图法进行研究,并针对它谱分辨率比较低等缺点,利用Matlab实现了几种改进的周期图法。     

调制分析与识别的谱相关方法

根据谱相关函数理论和对常用通信信号的谱相关函数及谱相关平面图分析，提出了几种可用于调制分析识别的谱相关特征参数，讨论了利用这些特征参数进行调制识别的方法和过程。试验表明，这种方法具有很好的识别效果。     

良有界算子及其谱定理的新证明

良有界算子是这样一类算子，它对于在某个紧区间上绝对连续的函数具有有界的函数演算，本文给出的方法使得可以获得两种良有界算子的谱定理，只要通过简单地改变所使用的拓扑。     

具奇性Helmholtz型问题谱逼近

考虑具奇性Ｈｅｌｍｈｏｌｔｚ型边值问题的高阶数值逼近．通过引进虚边界并确定虚边界处的边界条件，获得除奇点小领域外的区域内问题的准确表述，并进一步证明此问题的谱逼近解具有优化的误差估计