Characteristic polynomials of the information matrices of balanced fractional 3m factorial designs of resolution v

An explicit expression for the characteristic polynomial of the information matrix M_T of a balanced fractional 3^m factorial (3^m-BFF) design T of resolution V is obtained by utilizing the algebraic structure of the underlying multidimentional relationship. Also by using of the multidimensional relationship algebra, the trace and the determinant of the covariance matrix of the estimates of effects are derived.     

社会核算矩阵稳态均衡模型研究

不同于社会核算矩阵乘数模型(SAM-M)和基于社会核算矩阵的可计算一般均衡模型(CGE),本文设计了一套社会核算矩阵稳态均衡模型(SAM-SE)。该模型采用目标规划模型形式,以经济系统稳态性作为目标函数,给出了冲击变量、系统平衡、价格方程、技术行为方程、局部优化方程和表外变量6 组约束条件。设定在不同的约束条件下,可以建立稳态预测,技术模拟和均衡优化三种不同功能的层次模型。本文在编制中国2017 年SAM 的基础上,给出了一个SAM-SE 模型应用实例。SAM-SE模型可以用于国家经济系统运行模拟、预测和经济政策效用评价。     

华氏宏观经济数学模型定理的改进

本文改进了华罗庚教授提出的宏观经济数学模型中的一个定理,并利用改进的定理讨论有消费的情况下,为保证经济不出现危机,初始投入所满足的必要条件。     

实数不等式在矩阵论中的推广

文章利用矩阵迹的相关知识,把两个实数不等式推广到矩阵迹的不等式和矩阵的范数不等式,进一步给出了范数形式的推广形式。     

高校党支部“协同创新”管理模式的探索与实践——以矩阵式支部共建为例

高校职能部门党支部建设是高校党建工作的重要组成部分,而矩阵式支部共建结合了职能部门固态的党支部设置和灵活的合作交流需求,有利于突破职能部门间的壁垒,有利于营造和谐的合作氛围,便于树立大局意识,鼓励职能部门间＂协同创新＂,在项目制合作中,充分发挥支部共建中的教育和引导作用,更好地推进适应社会需求和高校发展的重要工作。     

An authenticity matrix for community engagement

Community engagement (CE), a key area of theory and practice in public relations, has two functions: first, to maintain and enhance relationships between organizations and diverse community groups in complex settings; and second, to give voice to these groups in addressing socially-situated problems. Implicit within these functions is CE’s ability to connect organizations with a selection of stakeholder voices that represent community perspectives on a given topic. It is the claimed representational nature of these voices that gives legitimacy to the processes and outcomes of CE. The role of public relations practitioners in CE is therefore to identify and involve voices that are authentic—that is, those that truthfully represent the extent and diversity of community sentiment. Such voices include those that are quiet or silent, even though they have a contribution to make. This study uses in-depth interviews with current practitioners to explore voice and authenticity in CE, and identifies four dimensions of CE in practice. These dimensions extend CE theory, particularly in public relations, by addressing the under-considered yet central role of authenticity in CE. The paper also draws on the dimensions to develop an Authenticity Matrix that allows CE practitioners to assess and critique their past and current CE projects. The Authenticity Matrix also provides guidance to public relations practitioners seeking to enhance the conditions for achieving authenticity in CE practice.     

关于银行人才队伍建设中管理者能力评价及优化问题的探讨

银行之间的竞争,在很大程度上是人才的竞争。很多银行都面临着核心人才被挖,人才队伍不稳定的局面,尤其是那些历史较长、规模较大的国有商业银行在外资银行、股份制银行的挑战之下人才流失情况更为严重。因此,如何打造出一支稳定的、高效能的人才队伍已成为银行管理者直接面对的重要课题。本文试用银行管理者能力评价矩阵(MCE矩阵)和管理能力优化模型对银行管理者在人才队伍建设过程中的管理能力进行评价并提出优化方案。     

Phase Type Distributions with Finite Support

This research is motivated by the fact that many random variables of practical interest have a finite support. For fixed a < b, we consider the distribution of a random variable X = (a + Ymod(b ? a)), where Y is a phase type (PH) random variable. We demonstrate that as we traverse for Y the entire set of PH distributions (or even any subset thereof like Coxian that is dense in the class of distributions on [0, ∞)), we obtain a class of matrix exponential distributions dense in (a, b). We call these Finite Support Phase Type Distributions (FSPH) of the first kind. A simple example shows that though dense, this class by itself is not very efficient for modeling; therefore, we introduce (and derive the EM algorithms for) two other classes of finite support phase type distributions (FSPH). The properties of denseness, connection to Markov chains, the EM algorithm, and ability to exploit matrix-based computations should all make these classes of distributions attractive not only for applied probability but also for a much wider variety of fields using statistical methodologies.     

北京水果蔬菜流通渠道及消费模式研究

本文通过对北京水果蔬菜流通渠道与消费选择的调研,了解北京水果蔬菜市场发展的基本情况、居民购买力和消费习惯,以及制约北京水果蔬菜市场发展的因素。经过分析发现北京水果蔬菜市场的发展受到诸多方面的影响,而由于销售渠道不畅导致水果蔬菜农户无法增收的影响尤甚,针对于此,提出提高北京市郊区农民收入、稳定市场的发展对策。