转变农业增长方式促进农村经济发展

农业增长方式的转变是推动农村经济发展的重要因素，本文就我国现阶段的农业增长方式进行了理性分析，初步提出了转变农业增长方式的基本思路。     

与时俱进转变高校图书馆的服务工作

高校图书馆不仅要在设备上更新,更重要的是必须在转变服务观念的前提下,实现服务方式、范围和职能的更新与提升。     

用工程数学知识求广义实积分的值

合理而恰当地运用工程数学知识可以更快更好地求得高等数学中一些不好求的广义实积分的值。利用傅立叶变换和拉普拉斯变换以及复变函数中的残数等多种工程数学知识求广义实积分的值,表明工程数学的知识使我们有更多的方法去处理和解决数学问题。     

H-Likelihood Approach to Factor Analysis for Ordinal Data

Marginal likelihood-based methods are commonly used in factor analysis for ordinal data. To obtain the maximum marginal likelihood estimator, the full information maximum likelihood (FIML) estimator uses the (adaptive) Gauss–Hermite quadrature or stochastic approximation. However, the computational burden increases rapidly as the number of factors increases, which renders FIML impractical for large factor models. Another limitation of the marginal likelihood-based approach is that it does not allow inference on the factors. In this study, we propose a hierarchical likelihood approach using the Laplace approximation that remains computationally efficient in large models. We also proposed confidence intervals for factors, which maintains the level of confidence as the sample size increases. The simulation study shows that the proposed approach generally works well.     

完全离散的多险种风险模型

在经典完全离散风险模型的基础上研究了多险种的风险模型,推广了传统的经典模型,讨论了几个和破产时刻有关的随机变量,通过拉普拉斯变换的方法,得到了终极破产概率的递推表达式和显式表达式.     

基于小波变换与自适应滤波的EEG信号的提取

本文提出了对非平稳的EEG信号的降噪和提取方法。小波变换是一个多尺度的时频分析方法,利用小波变换对预处理后的EEG信号进行多尺度分解,并与自适应滤波相结合进行消噪。用AR模型对复原的EEG信号进行谱估计。根据从人体的大脑皮层采集得到的数据,利用MATLAB进行了仿真实验,得到了比较满意的结果。     

Study on one-dimensional consolidation of saturated soil with semi-pervious boundaries and under cyclic loading

The variation of effective stress ratio of stratfied soil with semi-pervious boundaries and under cyclic loading was analyzed on the basis of Terzagh's one-dimensional consolidation assumptions. A solution by Laplace Transform was obtained for the case when the soil was under time-varied loading. With numerical inversion of Laplace Transform, some useful results were obtained for several kinds of commonly encountered loadings. The results can be meaningful in engineering practice. Project supported by the National Natural Science Foundation of China (No. 59908012) and Fok Ying Tung Education Fundation (No. 81067), Education Ministry of China.     

后现代认识论转向下的高职智慧图书馆服务模式建构与实践探究

基于后现代认识论与智慧图书馆的同一知识基础和"智慧"主题论证其价值指向,本文在梳理概括两者关系以阐明其机理特征的基础上,以后现代涉身性、情境性、生成性等知识观分析了高职智慧图书馆技术资源、空间场所、人文组织等相关建设,藉此系统建构了高职智慧图书馆服务模式和综合进路,为高职智慧图书馆转型提供理论指引和实践支持。     

完全受电极反应速率控制的去卷积电流方程

本文提出了完全受电极反应速率控制的去卷积(包括高阶去卷积)电化学分析理论,并对波形的性质进行了较详细的讨论.     

基于更新论证法考虑负索赔的一类与时间相关的风险模型的罚金折现期望函数

In this paper,the expected discounted penalty function is considered in the risk process with the time-correlated claims,that is,every main claim can cause a by-claim but the occurrence of the by-claim may be delayed.By the renewal argument,it is shown that the expected value satisfies a system of integro-differential equations.Moreover,the explicit expression for the Laplace transform of the expected value is derived by means of Rouchés theorem.A numerical example is