使哲学更加贴近实践——读陶富源教授主编的《马克思主义哲学原理》(第三版)

当今中国正在发生一场哲学变革,其目的在于克服旧教科书体系的系列缺陷,恢复马克思主义哲学的精神实质,探索和形成中国马克思主义哲学的新形态,使马克思主义哲学更加贴近实践,贴近生活,贴近时代.使哲学更加贴近实践,有两层涵义.一是,要以科学实践观为透视点,对人与世界,主体与客体,主观与客观关系进行理论反思并形成唯物主义哲学体系.二是,就当前中国来说最重要的实践就是中国人民正在进行的建设中国特色社会主义的伟大实践.陶富源教授主编的<马克思主义哲学原理>正是这样一部集中反映上述哲学变革成果的代表性著作.     

A model of the age patterns of births by parity in natural fertility populations

This research develops a convolution model to express the age patterns of fertility at each birth order in natural fertility populations in terms of six parameters, directly representing the proximate determinants of fertility, and a series of parity level indicators. The parity level indicators at each birth order are simply the proportions of women in a cohort who will eventually have births at each birth order it the age‐related fecundity decline is controlled. The Coale‐McNeil nuptiality model is adopted to represent the age pattern of first marriage rates and the natural fertility schedule employed in the Coale‐Trussell fertility model is incorporated to adjust age effects. The fast Fourier transform is used in solving the model numerically. It proves that the model is able to provide excellent fits to fertility for rural Chinese women in the 1950s.     

On the use of functional calculus for phase-type and related distributions

The area of phase-type distributions is renowned for its ability to obtain closed form formulas or algorithmically exact solutions to many complex stochastic models. The method of functional calculus will provide an additional tool along these lines for establishing results in terms of functions of matrices. Functional calculus, which is a branch of operator theory frequently associated with complex analysis, can be applied to phase-type and matrix-exponential distributions in a rather straightforward way. In this article we provide a number of examples of how to execute the formal arguments.     

A method for computing the autocovariance of renewal processes

In this paper we derive formulae for the autocovariance functions of renewal and renewal reward processes. The derivation is based on a Poissonization technique of a renewal process. The formulae are expressed in the form of Laplace transforms. In some cases we may invert the Laplace transforms analytically, but in general we have to invert them numerically.     

Partial Ordering and Aging Properties of Order Statistics When the Sample Size is Random: A Brief Review

In many practical situations, order statistics arise naturally with random sample size. In this article, we review results on partial orderings and aging properties of such order statistics. The comparison of order statistics for different sample sizes is also discussed here.     

针对影像处理的快速二维离散余弦转换算法(英文)

由于离散余弦转换在影像处理领域之重要性与日俱增,且消耗许多处理器运算时间,所以众多快速二维离散余弦转换算法不断被发表。该文提出一个应用于JPEG及MPEG图像处理的快速二维8×8离散余弦转换算法,该算法主要运用基本的累加及移位运算,快速评估8×8影像区块的复杂程度,可调整离散余弦转换参数的计算数量。该算法只需花费少量硬件成本,如比较器、加法器、移位器,便可有效降低离散余弦转换运算时间,且在模拟结果显示所提出的算法与传统及整数离散余弦转换相比,可达到较快的运算速度,且在量化系数较大的情况下,可得到更好效果。     

付氏变换法反褶积的新算法

应用离散付氏变换的反褶积方法，当X(k)存在零点时，求解H(k)困难。采用广义离散付氏变换可以解决这个问题。本文提出的算法既能解决X(k)有零点的问题，又可保留DFT算法的反褶积快速计算特性。     

基于虚拟仪器的机车滚动轴承故障诊断研究

介绍了机车滚动轴承故障诊断的机理。利用LabVIEW软件和相关硬件，设计了一种机车滚动轴承故障诊断系统。该系统结合某一型号机车轮对，利用CompactDAQ和NI 9233加速度采集模块采集滚动轴承振动信号。根据滚动轴承机理，振动信号包含滚动轴承故障信息。因此，运用小波变换函数，对振动信号进行时频域分析处理，获取有用的故障特征信息，进而确定故障类型。从实验结果可以看出，该方法能准确地找到故障频率，对于机车滚动轴承故障诊断有很好的指导意义     

中国19世纪文学思潮刍议

中国近代文学主要有经世致用、学习西方、复古主义、人文精神、文学通俗化等五大思潮，它们各自具有独特的特点，互相交错，互相渗透。它们显示了中国近代文学变革时错综复杂的状况，也显示了当时各种历史力量的交互作用。它们对后来的文学发展产生了重要影响。     

On the Dirichlet distributions on symmetric matrices

In this paper, we introduce a generalization of the Dirichlet distribution on symmetric matrices which represents the multivariate version of the Connor and Mosimann generalized real Dirichlet distribution. We establish some properties concerning this generalized distribution. We also extend to the matrix Dirichlet distribution a remarkable characterization established in the real case by Darroch and Ratcliff.