阜新市产业结构效应评价

围绕阜新市产业结构调整的合理性问题,在分析阜新市产业结构构成的基础上,对传统的结构评价模型进行改进,采用改进的计量经济模型,计算阜新市产业结构的变化对GDP的贡献率,分析贡献率变化的原因,为阜新市产业结构调整提供建议。     

高校学报研究生来稿学术不端现象管窥

对高校学报研究生来稿中的学术不端现象进行了梳理和分析，认为应从加强学术道德教育、充分发挥导师的作用、增强著作权法意识、改革研究生考核评价制度以及缩短审稿周期、及时向作者反馈审稿信息等方面，来防范和遏制学术不端现象。     

应用同伦正则化算法反演二维溶质运移模型中的弥散系数

利用同伦正则化算法探讨了二维对流弥散方程的依赖空间变量的弥散系数反演问题.讨论了初始迭代值、数值微分步长、以及收敛精度对算法实现的影响.数值模拟表明,同伦正则化算法对于此类参数反演问题是一种有效的方法.     

A linear model-based test for the heterogeneity of conditional correlations

Current methods of testing the equality of conditional correlations of bivariate data on a third variable of interest (covariate) are limited due to discretizing of the covariate when it is continuous. In this study, we propose a linear model approach for estimation and hypothesis testing of the Pearson correlation coefficient, where the correlation itself can be modeled as a function of continuous covariates. The restricted maximum likelihood method is applied for parameter estimation, and the corrected likelihood ratio test is performed for hypothesis testing. This approach allows for flexible and robust inference and prediction of the conditional correlations based on the linear model. Simulation studies show that the proposed method is statistically more powerful and more flexible in accommodating complex covariate patterns than the existing methods. In addition, we illustrate the approach by analyzing the correlation between the physical component summary and the mental component summary of the MOS SF-36 form across a fair number of covariates in the national survey data.     

清代词集丛刻的文献价值与词学贡献

清词号为中兴,词集丛刻亦甚为发达,文献保存之功甚巨。清代前期词坛昌盛,词集丛刻如《国朝名家诗馀》等多为今人词集之汇辑,保存了大量当代名家词集。中期的词集丛刻则更多地倾向于中小作家,于此可见更为普泛化群体的创作状况,同时在编选倾向上又受浙派词风和乾嘉学风的影响,呈现出偏重浙西词派和重音律等特征。晚清词集丛刻数量大增,品类丰富,王鹏运的《四印斋所刻词》等搜辑宋元旧集,开启词集校勘之风,词学贡献尤为卓著。     

多元线性回归分析及其实际应用

本文主要介绍了多元线性回归分析的数学模型.同时结合实例演示了应用R软件实现多元线性回归的过程.     

陕西省出生人口性别比定量分析与对策探讨

文章根据陕西省历次人口普查、部分人口抽样调查资料及公安、教育、计生统计报表数据，时全省出生人口性别失衡程度、女婴缺失数量和分因素贡献率等几个问题进行定量分析，并对出生人口性别比综合治理和科学决策提出建议。     

试论降清汉族知识人在清初的军事贡献

尽管备受时人和后世诟病,但降清汉族知识人凭借其丰富的儒家知识和治国经验,无论是在追剿李自成农民军残余方面、打击南明政权方面,还是在清初镇压地方社会叛乱,维护社会秩序等方面均发挥了积极的军事谋略作用。肯定他们的客观作用,对于准确把握明末清初的形势及清朝统一多民族国家的建立及巩固具有重要意义。在参与方式上,他们或出谋划策,或直接投身战斗之中,从而为清初的社会稳定,政权巩固发挥了积极作用。     

B-spline estimation for partially linear varying coefficient composite quantile regression models

Abstract

In this article, a new composite quantile regression estimation (CQR) approach is proposed for partially linear varying coefficient models (PLVCM) under composite quantile loss function with B-spline approximations. The major advantage of the proposed procedures over the existing ones is easy to implement using existing software, and it requires no specification of the error distributions. Under the regularity conditions, the consistency and asymptotic normality of the estimators are also derived. Finally, a simulation study and a real data application are undertaken to assess the finite sample performance of the proposed estimation procedure.     

江泽民对社会主义核心价值体系构建的理论贡献

以江泽民同志为核心的党的第三代领导集体面对国内外非常复杂的局面,始终坚持马克思主义指导思想,以科学的理论武装人;牢固树立社会主义共同理想和共产主义最高理想,以正确的方向引导人;着重培育民族精神和时代精神,以高尚的精神塑造人;强调以优秀的作品鼓舞人,引导人们知荣明耻,树立良好社会风尚,为社会主义核心价值体系的构建作出了重要的理论贡献。