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.     

Voluntary contributions and wages in nonprofit organizations

Voluntary work provides a major source of labor for many nonprofit organizations. Consequences of volunteers and paid staff working alongside each other in nonprofits are well documented. This article contributes to this strand of literature and investigates whether the presence of volunteer work influences paid employees' wages in nonprofit organizations. We estimated a multilevel wage equation accounting for personal characteristics of workers and characteristics of nonprofits. The analysis revealed that nonprofit organizations engaging volunteers pay lower wages to their employees. Our findings contribute to the understanding of wage‐setting behavior of nonprofits and improve the methodological approach of empirical research in this field.     

基于图式理论的公安行业英语口语教学策略研究

本文运用图式理论探讨有效进行公安行业英语口语教学的相关策略。     

The declining influence of family background on educational attainment in Australia: The role of measured and unmeasured influences

The paper examines changes in the influence of family background, including socioeconomic and social background variables on educational attainment in Australia for cohorts born between 1890 and 1982. We test hypotheses from modernization theory on sibling data using random effects models and find: (i) substantial declines in the influence of family background on educational attainment (indicated by the sibling intraclass correlations); (ii) declines in the effects of both economic and cultural socioeconomic background variables; (iii) changes in the effects of some social background variables (e.g., family size); (iv) and declines in the extent that socioeconomic and social background factors account for variation in educational attainment. Unmeasured family background factors are more important, and proportionally increasingly so, for educational attainment than the measured socioeconomic and social background factors analyzed. Fixed effects models showed steeper declines in the effects of socioeconomic background variables than in standard analyses suggesting that unmeasured family factors associated with socioeconomic background obscure the full extent of the decline.     

A modified test for testing exponentiality using transformed data

In this article, we present a test for testing uniformity. Based on the test, we provide a test for testing exponentiality. Empirical critical values for both the tests are computed. Both the tests are compared with the tests proposed by Noughabi and Arghami [H. Alizadeh Noughabi, and N.R. Arghami, Testing exponentiality using transformed data, J. Statist. Comput. Simul. 81 (4) (2011), pp. 511–516] using simulation experiments for a wide class of alternatives. The tests possess attractive power properties.     

“天神赐佑”与“尽人之力”：清世宗“天人感应”理念下的钱塘江海塘工程

雍正初年，清世宗在钱塘江海塘修筑中提出了“一劳永逸”的目标，并且为实现治水目的，在意识形态层面将海塘工程纳人到了“天人感应”理念的范畴。但是，“天神赐佑”、“非人力所能”与“一劳永逸”目标之间存在着明显的逻辑矛盾，从而对塘工修筑产生了深刻影响。意识形态与水利工程的交融，因此成为雍正朝治水政治的一大特点。     

“赔礼道歉”的异化与回归

我国《侵权责任法》延续了《民法通则》的规定,将赔礼道歉作为侵权责任承担方式之一种。从赔礼道歉责任承担方式在我国的产生来看,其有一定的历史时代原因;但在现代法的背景之下,该种责任承担方式不仅在理论上争议颇多,而且造成了司法实践中问题重重,其作为一种责任承担方式的合理性值得怀疑,将其从法律责任还原为道德责任实属必要。     

《一报还一报》的伦理混乱与秩序重构中的悲喜命运转向

莎士比亚《一报还一报》一剧以克劳狄奥与朱丽叶的婚前私通为主要伦理线,展示了维也纳法治下个人私通和公共淫乱两类人的跌宕命运,着重探讨了维也纳城的伦理混乱,以及在主政者的伦理秩序重构中个人私通者由悲而喜和公共淫乱者由喜而悲的命运转向,旨在指出在西方前现代社会中,对基督教伦理规范的认同与否决定着个人的命运转向。