离子新生活

记不起从何时开始，离子烫风靡了京城的大街小巷，游离子烫、黄金离子烫，冰冻水离子烫一大堆新鲜名词闯入了我们的生活，在我们对这些名词还处于懵懂时期的时候，美丽已经悄悄来到我们身旁，虽然现在离子烫的热潮渐渐冷却了下来，     

基于神经网络对Fe-V(Nb)-C系碳饱和溶解度非线性拟合分析

应用单输入、输出单元的BP人工神经网络模型算法，对在1450℃实验测得的Fe-V(Nb)-C系中碳的饱和溶解度热力学数据进行非线性拟合分析。其拟合误差检验精度比文献[1]线性回归精度更高、更能体现出实验数据的原始变化规律及排除偶然因素的干扰，该方法可供金属熔体热力不性质研究时参考。     

用CMAC预测红外图像的目标轨迹

为了有效地提高目标的捕获概率,进行红外图像目标跟踪时,必须预测目标的质心和姿态.采用CMAC估计器可以有效地解决常用预测算法运算量与预测精度之间的矛盾.CMAC估计器先用线性模型进行训练,然后预测目标的质心和姿态.CMAC每帧用实际误差训练一次,以减少其预测误差.CMAC具有很高的预测精度,且运算量少,适应目标跟踪的实时处理.实验表明:CMAC能精确预测目标的质心和姿态,适应模型变化,具有鲁棒性.     

造纸废水的处置及循环利用新技术

对传统的半化学法稻草浆制原色板纸生产工艺进行技改，产品质量稳定，且节水、降耗，减少了黑液的产生量。黑液沙坑内贮存，靠自然蒸发维持一定量的库容。纸机废水闭路循环，定期达标排放，解决了企业长期水污染问题。     

GPS/INS组合导航系统设计及实现方案

将两种或多种导航系统(或传感器)组合起来成为一个综合系统,其导航性能比单一的系统好,因此组合导航系统目前已成为导航系统的发展方向之一。现代控制理论的成就,特别是最优估计理论的数据处理方法,为组合导航系统提供了理论基础。介绍了GPS/INS组合导航系统的经典组合方式和采用卡尔曼组合滤波器的组合方式。重点对采用卡尔曼滤波的软件组合方式进行分析和推导,将全组合滤波法和分布式组合滤波法进行了较全面的比较。     

Face recognition with radial basis function (RBF) neural networks

A general and efficient design approach using a radial basis function (RBF) neural classifier to cope with small training sets of high dimension, which is a problem frequently encountered in face recognition, is presented. In order to avoid overfitting and reduce the computational burden, face features are first extracted by the principal component analysis (PCA) method. Then, the resulting features are further processed by the Fisher's linear discriminant (FLD) technique to acquire lower-dimensional discriminant patterns. A novel paradigm is proposed whereby data information is encapsulated in determining the structure and initial parameters of the RBF neural classifier before learning takes place. A hybrid learning algorithm is used to train the RBF neural networks so that the dimension of the search space is drastically reduced in the gradient paradigm. Simulation results conducted on the ORL database show that the system achieves excellent performance both in terms of error rates of classification and learning efficiency.     

Influence of Avicel PH-301 on the compressibility of alpha-methyldopa and phenobarbitone in direct compression

The aim of this work was to investigate the compressibility behavior of alpha-methyldopa and phenobarbitone using a Korsch EK0 instrumented eccentric tablet machine, with force-time and force-displacement curves constructed and applied to calculate different compressional values to study the compressional behavior. The results of this work revealed a difference in compressibility behavior between the two drugs during the compressional process. alpha-Methyldopa gave an abnormal compressional curve with high friction in the pre- and postcompressional phases. A residual force could be seen on the lower punch. Furthermore, capping and sticking were observed visually during tablet pressing, indicating poor compressibility behavior. In the case of phenobarbitone, no friction was observed in the precompressional phase, but there was higher friction in the postcompressional phase, especially in the ejection phase. The compressibility of the drugs was improved by the addition of Avicel PH-301 and magnesium stearate.     

Alternative approach to designing array pattern with controlled mean-square sidelobe level

A more general and efficient approach for designing array patterns with a controlled mean-square sidelobe level is presented. It is shown that the approach presented by Ng (see ibid., vol.26, p.337-9, 1990) can be considered as a limiting solution to the quadratic constrained optimisation problem presented in this Letter. Numerical results showed that under high interference-to-white noise ratio conditions, the new approach performs better, on average, than the Chebyshev synthesis technique.<>     

Occurrence and type of traumatic experiences among young Bosnian refugees in Denmark

Prior research has shown that young refugees may be especially traumatised. The study includes 123 young Bosnian refugees, living at two Bosnian boarding-schools in Denmark who were given a revised version of the Harvard Trauma Questionnaire (HTQ). The subjects themselves have on average experienced seven traumatic events, and have either witnessed or had a family member experience an additional six events. Three-quarters have been shot at, have lost their homes and private possession and have been exposed to violence in the form of harassment or humiliation. Two-thirds have lost friends. Three-fifths have lived with uncertainty as to whether friends and family were alive or dead. More than half have seen dead and wounded people, have had their lives threatened and have thought that they would die. More than a third have lost close family members, have been wounded and have had their homes destroyed. Just under a third have been exposed to physical violence or have witnessed somebody being killed. A quarter have starved and been ill without being able to receive treatment. About a fifth have experienced captivity, torture and forced labour. 6% have been raped or exposed to other forms of sexual abuse. It is concluded that the young Bosnians examined are a multitraumatised group. Use of the HTQ increased the number of traumatic events quite considerably compared to the case notes.