岩体分级的进化支持向量机方法研究

将进化支持向量机方法应用到岩体的工程分级中，提出了岩体工程分级的进化支持向量机方法．该方法将遗传算法和支持向量机有机结合，充分发挥二者各自的优点．结果表明这种方法具有很好的精度，达到了较好的分级效果．     

我国基层卫生人力资源的发展策略研究

文章通过对我国卫生人力资源的数量、质量、结构、分布等问题的分析,探讨了产生这些问题的经济、社会、政策等方面的因素,认为医学人才培养结构不合理、缺乏有效人力资源配置机制和政策机制,是导致这些问题的主要因素,据此提出了改善我国卫生人力资源质量、配置的政策建议。     

Local Linear Additive Quantile Regression

Abstract.  We consider non-parametric additive quantile regression estimation by kernel-weighted local linear fitting. The estimator is based on localizing the characterization of quantile regression as the minimizer of the appropriate 'check function'. A backfitting algorithm and a heuristic rule for selecting the smoothing parameter are explored. We also study the estimation of average-derivative quantile regression under the additive model. The techniques are illustrated by a simulated example and a real data set.     

一种预测轨道杂化类型的简便方法

根据用杂化轨道理论和价层电子对互斥理论预测和判断共价多原子分子或离子 (不包括配合物 )空间构型的原理 ,导出了一种用价层电子对数直接预测中心原子轨道杂化类型的简便方法     

A general maximum likelihood analysis of measurement error in generalized linear models

This paper describes an EM algorithm for maximum likelihood estimation in generalized linear models (GLMs) with continuous measurement error in the explanatory variables. The algorithm is an adaptation of that for nonparametric maximum likelihood (NPML) estimation in overdispersed GLMs described in Aitkin (Statistics and Computing 6: 251–262, 1996). The measurement error distribution can be of any specified form, though the implementation described assumes normal measurement error. Neither the reliability nor the distribution of the true score of the variables with measurement error has to be known, nor are instrumental variables or replication required.Standard errors can be obtained by omitting individual variables from the model, as in Aitkin (1996).Several examples are given, of normal and Bernoulli response variables.     

Bayesian Inference for a Stochastic Epidemic Model with Uncertain Numbers of Susceptibles of Several Types

A stochastic epidemic model with several kinds of susceptible is used to analyse temporal disease outbreak data from a Bayesian perspective. Prior distributions are used to model uncertainty in the actual numbers of susceptibles initially present. The posterior distribution of the parameters of the model is explored via Markov chain Monte Carlo methods. The methods are illustrated using two datasets, and the results are compared where possible to results obtained by previous analyses.     

基于遗传算法的高校排课系统设计

分析了排课的数学模型，根据遗传算法本身特点设计了一种数据结构基因编码，及几个涉及到的优化目标评价函数，提出了利用遗传算法解决排课问题的方法，并通过试验验证了该方法的有效性、可靠性。     

关于课堂教学评估的几点建议

课堂教学评估对教学督导、质量控制有着重要的促进作用,文中,作者对课堂教学评估提出了几点建议。     

分块结式矩阵逆阵的快速算法

利用结式矩阵求逆矩阵的多项式快速算法,给出了具有结式矩阵块的分块矩阵逆矩阵的一种快速算法。该算法仅用结式矩阵的第一行元素进行计算,在计算机上实现时只有舍入误差,故在理论上是精确的。最后给出了应用该算法的数值例子。     

高速路由查找算法的研究

介绍了路由查找算法的研究背景和一些技术指标,描述了几种具有代表性的IPv4高速路由查找算法,分析了其优缺点。阐述了基于硬件实现的高速路由查找算法——6级路由查找算法,给出了硬件实现结构,其仿真结果显示该算法实现了50×106次路由查找/s。