Classical testing in functional linear models

We extend four tests common in classical regression – Wald, score, likelihood ratio and F tests – to functional linear regression, for testing the null hypothesis, that there is no association between a scalar response and a functional covariate. Using functional principal component analysis, we re-express the functional linear model as a standard linear model, where the effect of the functional covariate can be approximated by a finite linear combination of the functional principal component scores. In this setting, we consider application of the four traditional tests. The proposed testing procedures are investigated theoretically for densely observed functional covariates when the number of principal components diverges. Using the theoretical distribution of the tests under the alternative hypothesis, we develop a procedure for sample size calculation in the context of functional linear regression. The four tests are further compared numerically for both densely and sparsely observed noisy functional data in simulation experiments and using two real data applications.     

论电子商务法的功能等同原则

通过对电子商务法功能等同原则基本内涵的剖析以及国际国内电子商务法对功能等同原则的体现，阐述了为什么只有电子商务法领域才有功能等同原则、功能等同原则是如何与其它原则一同构成电子商务法基本原则体系的、功能等同原则对立法和司法实践具有什么指导意义，并最终得出功能等同原则不应该长久地作为电子商务法的基本原则的结论。     

Elderly Prisoners: A Growing and Forgotten Group Within Correctional Systems Vulnerable to Elder Abuse

ABSTRACT

There are over 2.1 million people incarcerated in the nation's jails and prisons. Additionally, close to 600,000 prisoners are released annually into communities across the country. Many prisoners and those released from prisons are elderly. The purpose of this article is to examine the systemic abuse and neglect experienced by elderly prisoners while they are incarcerated and when they are released from prison. Most correctional systems have inadequate resources, processes, and personnel to manage the elderly population inside and outside of prisons. In addition to providing a definition of “elderly prisoner,” two specific problems–prison health care and prisoner re-entry–are examined in the article. The article concludes with recommendations for both policy and research on how best we can further understand and address the multiple needs and concerns faced by elderly prisoners.     

Mean estimation with data missing at random for functional covariables

In a missing-data setting, we want to estimate the mean of a scalar outcome, based on a sample in which an explanatory variable is observed for every subject while responses are missing by happenstance for some of them. We consider two kinds of estimates of the mean response when the explanatory variable is functional. One is based on the average of the predicted values and the second one is a functional adaptation of the Horvitz–Thompson estimator. We show that the infinite dimensionality of the problem does not affect the rates of convergence by stating that the estimates are root-n consistent, under missing at random (MAR) assumption. These asymptotic features are completed by simulated experiments illustrating the easiness of implementation and the good behaviour on finite sample sizes of the method. This is the first paper emphasizing that the insensitiveness of averaged estimates, well known in multivariate non-parametric statistics, remains true for an infinite-dimensional covariable. In this sense, this work opens the way for various other results of this kind in functional data analysis.     

Systemic Barriers to the Employment of Social Workers in Alcohol and Other Drug Treatment Agencies

Abstract

Literature suggests a low number of social workers employed in the field of alcohol and other drug (AOD) treatment. This study shows that social workers with undergraduate degrees (BSWs) have higher rates of employment in AOD than bachelor's degree holders from other disciplines. Master's level social workers (MSWs), however, have a much lower involvement than their counterparts with counseling degrees. Six factors are inferred to partially explain MSWs' low involvement in the field: (1) low education requirements; (2) low pay; (3) absence of “social worker” positions; (4) competition among different disciplines; (5) lack of MSW interns; and (6) state certification requirement. Suggestions to increase the employment of social workers in the AOD field are offered.     

Regression for non-Euclidean data using distance matrices

Regression methods for common data types such as measured, count and categorical variables are well understood but increasingly statisticians need ways to model relationships between variable types such as shapes, curves, trees, correlation matrices and images that do not fit into the standard framework. Data types that lie in metric spaces but not in vector spaces are difficult to use within the usual regression setting, either as the response and/or a predictor. We represent the information in these variables using distance matrices which requires only the specification of a distance function. A low-dimensional representation of such distance matrices can be obtained using methods such as multidimensional scaling. Once these variables have been represented as scores, an internal model linking the predictors and the responses can be developed using standard methods. We call scoring as the transformation from a new observation to a score, whereas backscoring is a method to represent a score as an observation in the data space. Both methods are essential for prediction and explanation. We illustrate the methodology for shape data, unregistered curve data and correlation matrices using motion capture data from an experiment to study the motion of children with cleft lip.     

对范·路文兹瓦特翻译比较模式的再思考

文章从理论阐述、译例选取两方面突出了范·路文兹瓦特（Kitty Van Leuven—Zwart）的比较模式在翻译转换中的理论意义和实用价值，结合东西方不同翻译理论流派的观点，从其可操作性和理论根源上剖析了比较模式的合理性、科学性以及存在的缺陷。     

俄语引语现象思辨——Л·Петрушевская短篇小说中的引语研究

对Л.Петрушевская短篇小说中新出现的引语现象,运用已有的俄语引语研究成果无力做出解释。中俄学界与欧美学界在引语研究领域有一些概念上的不同认识和理解,通过对其进行必要的分析,并借鉴欧美及国内英语学界在该领域及相关领域的研究成果,可以在一定程度上解决这些新问题。而在此基础上所提出的俄语引语的新体系：直接式引语和间接式引语;语境型引语和功能型引语,能够较为全面地解释Л.Петрушевская及俄罗斯其他后现代作家作品中出现的新的引语现象。     

上海CBD建设及陆家嘴——外滩核心CBD发展构想

CBD是城市的核心和灵魂，也是城市经济功能重要的载体。本文从现代CBD发展的国际趋势入手，对上海城市CBD建设过程的发展状况和存在问题两个方面进行了分析，提出了上海未来CBD的建设思路。在此基础上，对上海陆家嘴一外滩核心CBD区域功能规划进行了深入具体的研究，指出了陆家嘴一外滩核心CBD发展的不足，提出了未来发展的规划目标和功能设想，并在政策和制度上提出了保障措施。     

利用思维导图提高高职学生的英语语法能力

本文提出将思维导图运用到英语语法的学习、记忆、复习之中，将有助于高职学生掌握英语语法的一些难点。