A reciprocal,moderated mediation model of grit,engagement, and literacy achievement among dual language learners

This short‐term longitudinal study asked (a) how and for whom socioemotional factors like grit and emotional engagement predict later literacy achievement; and (b) if there are reciprocal effects between literacy and these socioemotional factors. An autoregressive cross‐lagged (ARCR) design included 3 time points over 4 months with an ethnic minority, dual language learner sample (n = 142; 54% female; 75% Latina/o; M = 9.47 years old). The procedure at each time point included teacher‐reported student emotional engagement and adapted grit questionnaires in addition to a student literacy achievement performance task. A reciprocal model (i.e., socioemotional factors and literacy affect each other) was compared to direct (i.e., socioemotional factors impact literacy) and reverse (i.e., literacy impacts socioemotional factors) models. Results suggested that the reciprocal model fit better than the direct and reverse models. Within the reciprocal ARCR model, grit had a significant impact on later literacy achievement via the mediator of engagement and moderated by age. Findings hold implications for education discourse on reciprocal and indirect effects of grit on achievement among older elementary‐aged dual language learners.     

论社会冲突理论视角的旅游社会冲突正负双重功能——基于对西部民族地区旅游业发展的考察

以西方社会冲突理论为基础，结合对西部民族地区案例点考察的田野调查成果，从理论和实践两个层面上全面认识旅游社会冲突的功能：一方面，旅游社会冲突会产生旅游地社会资源损失、旅游地社会秩序破坏、民族心理受伤害、旅游目的地形象损毁、地方政府公信力流失等负面作用；另一方面，旅游社会冲突也具有重建社会关系、提高社会整合度、缓解社会矛盾等正向功能。因此，旅游社会冲突具有正负双重功能的辩证观可以为我国民族地区旅游社会冲突调控的具体实践提供一定理论依据。     

高校教育的双重性及其双重教育研究

社会需要兼有公共与职业两方面综合素质能力强的全面型人才。高校教育具有公共性与职业性，既要学生了解掌握社会活动需要的公共的知识、技术与规范等，又要学生了解掌握职业活动需要的专门的知识、技术与规范等，双重教育的协调共同发展是高校教育发展的必然趋势，应客观认识高校教育的双重性与做好双重性教育。     

Sufficient dimension reduction via distance covariance with multivariate responses

In this article, we propose a new method for sufficient dimension reduction when both response and predictor are vectors. The new method, using distance covariance, keeps the model-free advantage, and can fully recover the central subspace even when many predictors are discrete. We then extend this method to the dual central subspace, including a special case of canonical correlation analysis. We illustrated estimators through extensive simulations and real datasets, and compared to some existing methods, showing that our estimators are competitive and robust.     

Dual life of seafarers’ families: descriptive study of perspectives of seafarers’ partners

ABSTRACT

Although the dual life of a seafarer’s family is recognized as a unique life, a systematic approach to the perspectives of seafarers’ partners is lacking, especially in the case of long-term separation. Therefore, we have adopted a qualitative approach to gain systematic and deeper insight into the features of the seafarers’ occupation which are reflected positively or negatively in their partners’ lives. By means of an online survey, we collected data from 647 partners of Croatian seafarers. The data obtained, relating to open-ended questions, were analysed by thematic analysis. Negative effects of separation emerged as the most strongly-represented theme, wherein a range of different aspects relating to separation is identified (loneliness, overload with domestic duties and care for children, etc.). Other negative aspects relate to fear caused by risks and stressors in seafaring, subordination of one’s own job/career, and lack of understanding and support from family and friends. Still, participants reported a range of positive aspects of the dual life, such as financial security, growth of the loving relationship, full commitment from their partner during days off, the benefits of the seafarer's job satisfaction for the relationship, and having time for one’s own growth during the partner’s absence.     

本科生专业导师与思政辅导员双重培养机制优化探究

针对高校在实行本科生专业导师与思政辅导员双重培养机制中存在的问题,应加强本科生专业导师的选聘、培训工作,规范专业导师绩效考核和评价机制,完善思政辅导员学生管理与专业参与水平双重评价机制,建立健全双重培养质量监督体系,充分发挥导师专业指导和辅导员思政教育管理双重培养优势,最大限度地发挥学生自身特长,全面服务大学生成长成才。     

“新二元结构”破解对策的经验研究——以上海市闵行区为例

城市里户籍和非户籍"新二元"结构给有限的社会资源、社会管理以及社会制度带来巨大的挑战,由于制度性缺失导致的城市内部非户籍人口与户籍人口之间享受不同种类和水平的公共服务。近年来闵行区在破解"新二元"结构方面尝试重要举措,积累了诸多经验。确定"以人为本、以综合管理为核心、以社会融入为目标"为基本原则,注重了六个方面的工作。     

影子价格的特征及其计算

影子价格具备虚拟性、最优性、确定性、可及性及方向性,以此阐述对偶变量与影子价格的差异,并对线性规划问题中影子价格的求解做简要介绍.     

构建“双循环”新发展格局的现实逻辑、实施路径与时代价值

构建以国内大循环为主体、国内国际双循环相互促进的新发展格局，是基于应对逆全球化趋势、新冠肺炎疫情、经济发展转型的现实逻辑；构建"双循环"新发展格局需要明确"双循环"一个要义，打通供需两个端口，耦合产业链、供应链、创新链三个链条，循环劳动力、土地、资本、技术四大要素，练好新理念、新科技、新经济、新基建、新机制五大内功；在世界百年未有之大变局的历史条件下构建"双循环"新发展格局具有重要的时代价值，将为破解中国经济发展新困境提供新思路，为中国特色社会主义经济持续发展指明新方向，为世界新一轮经济复苏注入新动力。     

Interval robust design under contaminated and non normal data

Abstract

Robust parameter design (RPD) is an effective tool, which involves experimental design and strategic modeling to determine the optimal operating conditions of a system. The usual assumptions of RPD are that normally distributed experimental data and no contamination due to outliers. And generally the parameter uncertainties in response models are neglected. However, using normal theory modeling methods for a skewed data and ignoring parameter uncertainties can create a chain of degradation in optimization and production phases such that misleading fit, poor estimated optimal operating conditions, and poor quality products. This article presents a new approach based on confidence interval (CI) response modeling for the process mean. The proposed interval robust design makes the system median unbiased for the mean and uses midpoint of the interval as a measure of location performance response. As an alternative robust estimator for the process variance response modeling, using biweight midvariance is proposed which is both resistant and robust of efficiency where normality is not met. The results further show that the proposed interval robust design gives a robust solution to the skewed structure of the data and to contaminated data. The procedure and its advantages are illustrated using two experimental design studies.