为什么会有这样的批评——论1954年批评界对路翎的批评

1954年批评界对于路翎的批评,是一次正常的文学批评,其中呈现了十七年文学批评的基本特征和诉求,从中我们探究十七年文学批评的原则和理路。由于随后路翎在胡风事件中的遭遇,这次正常的文学批评没有得到学术化的梳理和审视,以致误导了我们对十七年文学批评的理解。     

Riordan matrices and higher-dimensional lattice walks

An algebraic combinatorial method is used to count higher-dimensional lattice walks in Z^m${\mathbb{Z}}^m$ that are of length n ending at height k. As a consequence of using the method, Sands’ two-dimensional lattice walk counting problem is generalized to higher dimensions. In addition to Sands’ problem, another subclass of higher-dimensional lattice walks is also counted. Catalan type solutions are obtained and the first moments of the walks are computed. The first moments are then used to compute the average heights of the walks. Asymptotic estimates are also given.     

Determinants of (generalised) Catalan numbers

We show that recent determinant evaluations involving Catalan numbers and generalisations thereof have most convenient explanations by combining the Lindström–Gessel–Viennot theorem on non-intersecting lattice paths with a simple determinant lemma from Krattenthaler (1990). This approach leads also naturally to extensions and generalisations.     

有零分配格上矩阵半环的理想格

证明了有零分配格 L上的 n阶方阵半环的所有理想在集合包含关系 下构成完备的分配格 ,且此分配格同构于格 L的理想格 .     

Consistent procedures for multiclass classification of discrete diffusion paths

The recent advent of modern technology has generated a large number of datasets which can be frequently modeled as functional data. This paper focuses on the problem of multiclass classification for stochastic diffusion paths. In this context we establish a closed formula for the optimal Bayes rule. We provide new statistical procedures which are built either on the plug-in principle or on the empirical risk minimization principle. We show the consistency of these procedures under mild conditions. We apply our methodologies to the parametric case and illustrate their accuracy with a simulation study through examples.     

晶格与平移群

本文按照点阵与平移群的对应关系,列出了14种平移群的数学式,提出用平移群判断晶格型式,并讨论了教科书中常见的不妥当说法。     

对军用安全模型的扩展

军用安全模型是一种适合于诸如政府部门、军队等涉密组织,信息系统内对信息流进行控制的多级安全模型,原理是依据线性格与子集格的乘积格实施信息流控制的,但所描述的关系在实际应用中存在着缺陷。新模型则利用敏感级格与组织内部的层次格的乘积格反映组织内部带敏感性的“层级”关系,然后再与信息的子集格相乘形成更为合理的访问控制与信息流控制关系,从而使其更适合于军队、政府部门或各类涉密组织的信息系统对信息和信息流的安全控制要求。     

Generation of space-filling uniform designs in unit hypercubes

In this paper a new discrepancy measure of uniformity for uniform designs (UDs) in a unit cube is presented. Alternative measures of uniformity based on distance criteria which can be applied to higher dimensions are also discussed. The good lattice point (glp) method was used to construct the uniform designs. Two approaches (generator equivalence and projection) of reducing the computational cost of the glp method are proposed and discussed. Two examples are presented in this paper.     

加强高校本科生党员经常性教育的路径探析

本文阐述了高校本科生党员经常性教育的重要性,分析了存在的问题,从教育内容、载体、主体和机制四个方面,提出了加强高校本科生党员经常性教育的主要路径。     

自然科学理论创新的多维路径及复杂性机制探析

科学理论演变子系统和科学实践操作子系统不但各自自我创生、自我发展,而且二者之间的互动又形成了一个相互支持、相互"催化"的复杂性架构,呈现了一个多路径演化的自然科学发展态势。其中内在蕴含着的开放性和封闭性机制、自稳性和失稳性机制、多元竞争协同机制、反馈性机制、选择性机制相互影响,共同推动着科学理论的创新。