信息处理维吾尔语词语分类体系及标记研究（I）

维吾尔语词性标注研究,是面向信息处理的维吾尔语语法分析的核心内容．本文提出面向信息处理的现代维吾尔语词语分类体系及其标记集,并且对分类体系中的12个词类的分布特征从形态变化、句子成分功能和短语组合功能等方面进行了描述．     

一种基于R语言的大孔吸附树脂预测模型的构建

针对精准筛选高选择性分离中药多糖的大孔吸附树脂时间冗长、操作繁琐的现状,该文构建了一种快速筛选大孔吸附树脂的预测模型.采用R语言建立大孔吸附树脂参数、葡聚糖分子量与吸附量之间的多源信息模型,利用多源信息模型快速预测和筛选对中药多糖具有最佳吸附效果的大孔吸附树脂类型.所建多源信息模型的相关系数(r2)为0.901 2,P...     

应用自适应套孔爬山法求解多层光波导复本征方程

本文应用自适应套孔爬山法求解多层光波导复本征方程。计算的结果与各种传统方法进行了比较,证明了本法应用于多层光波导复本片方程的求解是有效的。     

微电网动态调度模型

微电网系统中可再生能源出力和建筑负荷均具有随机特性,使得传统方法难以描述其动态特征,随着可再生能源的大量接入,微电网系统结构也愈趋复杂化,本文基于Modelica非因果建模语言对含随机参数的复杂系统进行动态描述,实现对可再生能源发电、储能元件和可控负荷的耦合建模,并验证其准确性。运用动态模拟结合多种群遗传算法对典型微电网系统进行24 h运行策略调整,结果验证了该模型与动态调度方法的有效性。     

基于FPGA的全帧CCD驱动设计

以加拿大Dalsa公司的全帧CCD图像传感器FTF4027M为例,在研究了全帧CCD结构和驱动时序的基础上,提出了基于现场可编程逻辑门阵列(FPGA)的驱动脉冲设计方法.选用FPGA作为硬件设计平台,使用VHDL语言对驱动时序发生器进行了硬件描述,采用Quartus Ⅱ 5.0对所设计的驱动时序发生器进行了仿真,针对Altera公司的FPGA器件EP1C3T144C8进行了适配.实验结果表明,设计的驱动电路可以满足其全帧CCD的各项驱动要求并且具有设计灵活、硬件调试简单的优点.     

An Information Theoretic Approach to Symbolic Learning in Synthetic Languages

An important aspect of using entropy-based models and proposed “synthetic languages”, is the seemingly simple task of knowing how to identify the probabilistic symbols. If the system has discrete features, then this task may be trivial; however, for observed analog behaviors described by continuous values, this raises the question of how we should determine such symbols. This task of symbolization extends the concept of scalar and vector quantization to consider explicit linguistic properties. Unlike previous quantization algorithms where the aim is primarily data compression and fidelity, the goal in this case is to produce a symbolic output sequence which incorporates some linguistic properties and hence is useful in forming language-based models. Hence, in this paper, we present methods for symbolization which take into account such properties in the form of probabilistic constraints. In particular, we propose new symbolization algorithms which constrain the symbols to have a Zipf–Mandelbrot–Li distribution which approximates the behavior of language elements. We introduce a novel constrained EM algorithm which is shown to effectively learn to produce symbols which approximate a Zipfian distribution. We demonstrate the efficacy of the proposed approaches on some examples using real world data in different tasks, including the translation of animal behavior into a possible human language understandable equivalent.     

大口径平背形主镜背部支撑位置优化计算方法

针对背部支撑方式的平背形反射镜,提出了一种确定主镜最佳背部支撑位置的优化计算方法。利用AN-SYS软件中的APDL语言建立了主镜的参数化模型。利用有限元法,以主反射镜光轴垂直时自重作用下的镜面最大变形量为目标函数,以相同工况下一阶自振频率为约束条件,对背部支撑点位置的相关参数和中心镜厚进行了优化分析,得到了满足镜面面型误差要求的最佳背部支撑位置及中心镜厚。     

数字集成电路测试矢量的生成

电路的日益复杂和集成度的不断提高,使测试已成为集成电路设计中费用最高、难度最大的一个环节。文章主要讨论了测试中伪随机测试矢量的生成,并提出了改进其周期的办法,从而大大提高了故障的覆盖率。最后通过硬件描述语言Verilog在Quartus Ⅱ软件下进行仿真,验证了其正确性。     

Subdividing verbs to improve syntactic parsing

This paper proposes a new way to improve the performance of dependency parser： subdividing verbs according to their grammatical functions and integrating the information of verb subclasses into lexicalized parsing model. Firstly, the scheme of verb subdivision is described. Secondly, a maximum entropy model is presented to distinguish verb subclasses. Finally, a statistical parser is developed to evaluate the verb subdivision. Experimental results indicate that the use of verb subclasses has a good influence on parsing performance.     

二维离散小波变换的FPGA实现

依据传统的Mallat算法,提出了一种基于FPGA实现的高速二维小波变换的方法.该方法采用模块化设计,通过将这些模块按变换要求适当级联,可轻松实现多级二维离散小波分解.用Verilog HDL实现了相关模块,并进行了仿真和逻辑综合.