Model Checks in Inverse Regression Models with Convolution‐Type Operators

Abstract. We consider the problem of testing parametric assumptions in an inverse regression model with a convolution‐type operator. An L ₂ ‐type goodness‐of‐fit test is proposed which compares the distance between a parametric and a non‐parametric estimate of the regression function. Asymptotic normality of the corresponding test statistic is shown under the null hypothesis and under a general non‐parametric alternative with different rates of convergence in both cases. The feasibility of the proposed test is demonstrated by means of a small simulation study. In particular, the power of the test against certain types of alternative is investigated. Finally, an empirical example is provided, in which the proposed methods are applied to the determination of the shape of the luminosity profile of the elliptical galaxy NGC 5017.     

中国“三农”抽样调查之抽样框问题研究

20世纪90年代后期,中国的＂三农＂问题逐步突显出来,涉及＂三农＂问题的抽样调查也越来越多。然而,抽取样本依据的抽样框大多是基于普查和行政记录资料编制的单纯名录抽样框。单纯名录抽样框的使用存在很多弊端。拟从抽样框的建立与更新维护两个阶段进行分析,提出解决现有问题的具体思路。在抽样框的建立阶段,建立名录抽样框和区域抽样框相结合的双重简单抽样框,并在此简单抽样框的基础上添加特征群,构建适合不同调查类别的复杂抽样框;在抽样框的更新维护阶段,通过合理地制度安排,以普查数据为基础,以建设抽样框数据库为契机开展抽样框的更新维护工作,使建成的抽样框得到及时有效地更新维护。     

News

U. S. National Income Series Revised—Congress Votes No on Censuses of Business and Manufactures—Britain Revises Living Cost Index-U. S. and U. K. Surveys Uncover Lacks in Statistical Training-Forthcoming Statistical Conferences     

网红直播带货的伦理审视

随着网络直播的兴起和网红经济的发展,网红直播带货成为一种新的重要营销方式,它不仅能满足人们个性化的物质需求,而且能满足个体的社交化情感诉求,但其中所潜藏的诚信缺失和个体消费成瘾等伦理失范问题较为突出。加强个人义利观教育、完善社会诚信监督机制,丰盈个体精神生活、净化社会消费风气,则是解决这些伦理问题的可行性路径。     

新时代应用型教师的培养：问题与策略——以地方本科院校为视角

以校地合作、校企合作为发展战略的地方本科院校向应用型院校转变,已经成为一种潮流和趋势,而应用型教师的建设与培养更是迫在眉睫。在明确新时代高校应用型教师培养的必要性的基础上,从数量层面、结构层面、能力层面以及培训层面指出了培养过程中存在的问题,同时针对这些问题提出较为有效的应对策略。     

Resolving complex community problems: Applying collective leadership and Kotter's change model to wicked problems within social system networks

How does collective leadership within social networks resolve chronic and complex problems common to communities? Unfortunately, sometimes it does not, but when it does, the outcome may be truly extraordinary. We use a case study approach to explain how one Midwest community within the USA applied collective leadership within a community network to reduce teen births. It took ten years of what many identified as provocative media campaigns and comprehensive sex education programs to reduce teen births by 65%, significantly exceeding the stated goal. Using Kotter's change model as a backdrop, powerful strategies and provocative creativity reveal courageous leadership within a social network of diverse people and organizations focused on improving the social well being of their community.     

Grandiose and vulnerable narcissism: Associations with alcohol use,alcohol problems and problem recognition

Objective: This study fills a gap in the literature by examining the relationship between two types of narcissism, vulnerable and grandiose, and five alcohol-related outcomes (ie, alcohol use, alcohol problems, evaluation and expectancies of problems, and readiness to change).

Participants: 345 college students (28% men, 72% women) from a Midwestern university were recruited from undergraduate psychology courses from April 2015 to October 2016.

Methods: Participants completed an online survey with questionnaires measuring the variables of interest. Multiple regression analyses were used to test the hypotheses.

Results: Grandiose narcissism was a positive predictor of alcohol consumption and a positive (ie, good) evaluation of alcohol-related problems. Vulnerable narcissism was a positive predictor of alcohol-related problems, problem recognition (ie, readiness to change), and problem expectancies.

Conclusions: The results speak to the effects that different types of narcissism have on alcohol use, alcohol problems and attitudes towards alcohol problems among young adults.     

英语语法教学中导入交际活动的探索

交际法理论及国外语言学界关于课堂教学中有效利用交际活动的研究已很深入，语法教学中导入交际活动的方法，可以使该教学模式的优势得到最大发挥。     

论邓小平的"三农"思想

邓小平同志关于农业、农村、农民问题的论述是十分丰富和深刻的。他始终立足于我国的具体国情,将生产力的发展放在首位,对农业、农村在国民经济和社会发展中的战略地位进行了科学地分析,指出农民的富裕是社会发展的前提,从而创造性地提出了有中国特色的"三农"思想。今天,认真学习和运用这一思想,对解决新形势下的"三农"问题,推进农村改革,全面建设小康社会具有重要意义。     

我国林业标准化存在的问题及发展战略

新时期开展林业标准化工作具有重大意义。我国林业标准化工作在取得了很大成就的同时,也存在一些问题。本文对这些问题进行了分析,提出了解决这些问题的政策性建议。