颅内胶质瘤术后放疗43例临床分析

目的：回顾总结４３例脑胶质瘤术后放疗的病例，分析影响预后的因素。方法：１９８８年３月至１９９２年１２月，４３例经术后病理证实为脑胶质瘤的病例。其中手术部分切除３７例（８６％），肉眼全切６例（１４％），术后放疗采用＾６０Ｃｏγ线。放射剂量为３０￣６０Ｇｙ，常规分割。结果：４３例总５年生存率２５．６％。高分级组１、３、５年生存率分别为７２％、２０％、１２％，低分级组的１、３、５年生存率分别为７２．２％     

化学实验中非预期效应分析及思索

在详细地分析了化学实验中产生非预期效应的原因的基础上。提出了解决办法 ,结合实验中非预期效应的解决 ,阐明了培养学生创造性能力、科学观察能力、信息的获取、转化、传递、加工能力等综合能力的方法     

亚强停点及二参数过程的弱停止

本文引入亚强停点及弱局部鞅的概念,得到了一组相关的结果。     

明室光电效应装置的研制

介绍利用聚酯塑料管制作暗箱，与其它元件组装成光电效应实验装置，可有明室条件下，测试出光电伏安特性曲线。     

Incorporating Linguistic Rules in Statistical Chinese Language Model for Pinyin-to-character Conversion

An N-gram Chinese language model incorporating linguistic rules is presented. By constructing elements lattice, rules information is incorporated in statistical frame. To facilitate the hybrid modeling, novel methods such as MI-based rule evaluating, weighted rule quantification and element-based n-gram probability approximation are presented. Dynamic Viterbi algorithm is adopted to search the best path in lattice. To strengthen the model, transformation-based error-driven rules learning is adopted. Applying proposed model to Chinese Pinyin-to-character conversion, high performance has been achieved in accuracy, flexibility and robustness simultaneously. Tests show correct rate achieves 94.81% instead of 90.53% using bi-gram Markov model alone. Many long-distance dependency and recursion in language can be processed effectively.     

SPB型泵自冷却分析

根据泵的结构原理，采用在泵体简化图上分块划分控制体积的方法，利用控制体积能量守恒定律，建立SPB泵各存油容腔内工作质温度的微分方程，并求解得出温度的时变规律，进而定量分析SPB泵的自冷却性能。     

概率多项式及其应用

本引入概率多项式的概念，利用组合数学计数理论中“贡献法原理”给出概率空间任一事件的概率由若干事件交的概率表达公式。     

多节状SiC晶须的合成及在矿冶工程材料中的应用

运用TEM、XRD等分析检测技术对SiCw的形貌结构、长度与直径分布及其应用于复合材料中的特性进行了检测。研究表明：SiCw产品以直晶为主，表面呈多节状，以-SiC为主要晶型，直径为0.2～1.5m,长度为30～200m。此外，作者对SiCw在矿冶工程材料中的应用进行了展望。     

Knowledge discovery from communication network alarm databases

The technique of Knowlege Discovery in Databases (KDD) to learn valuable knowledge hidden in network alarm databases is introduced. To get such knowledge, we propose an efficient method based on sliding windows (named as Slidwin) to discover different episode rules from time squential alarm data. The experimental results show that given different thresholds parameters, large amount of different rules could be discovered quickly. Foundation item: Supported by the National 863 High-Tech Project (863-306-Z705-02) and National Natural Science Foundation of China (69896240) Biography: Wang Xi-miao (1973-), female, Ph. D. candidate. Research interests: network management and information processing.     

Studies of Photorefractive Crystals of Double-Doped Ce,Fe:LiNbO3

In this paper, photorefractive crystals of Ce, Fe:LiNbO3 are systematically studied. The crystals have been grown by Czochralski method. The samples with different doping concentrations and oxidation/reduction treatments have been fabricated. Their photorefractive properties were experimentally investigated by using two-beam coupling. The results show that the photorefractive efficiency depends on the dopant concentration, oxidation/reduction treatment, and light wavelength. The doping mechanism is also discussed here.