全国普通高等学校美术学(教师教育)本科专业课程设置指导方案(试行)探讨

通过学习《全国普通高等学校美术学(教师教育)本科专业课程设置指导方案》(试行),认为“方案”中新的课程设置是从精英教育向大众教育模式转型的一大改革,对学校和教师提出了全方位的、高标准的、全新的要求。     

终身教育与学生自主学习能力的培养

自主学习能力对于学习者而言是一项重要技能,是实现终身教育所必备。本文分析了自主学习能力的培养对于实现有效终身教育的必要性,探讨了在现代信息技术日益改变着教学模式的背景下如何培养学生的自主学习能力。笔者认为,树立以学生为中心的教学理念是实现自主学习能力培养的关键,培养学习动机、学习策略以及信息素养是提高自主学习能力的三个重点。     

发展权视野中的和谐社会构建

党的十六届四中全会通过的《关于加强党的执政能力建设的决定》提出了构建社会主义和谐社会的新命题,“把和谐社会建设摆在重要位置”。这是对党的十六大关于“社会更加和谐”这一思想的进一步深化和发展。和谐社会的构建,对于促进和保障发展权的实现有着非常重要的意义。一、促进和保障发展权是和谐社会构建的必然要求发展权是参与和享有发展进程及其结果的权利。在此进程中,所有人权和基本自由最终都将充分实现。目前“我国面临的重要而紧迫的问题是赶上世界迅猛发展潮流,大力发展国力和维护发展权的问题。”“比之生存权来说,发展权才是…     

An elastic-net penalized expectile regression with applications

To perform variable selection in expectile regression, we introduce the elastic-net penalty into expectile regression and propose an elastic-net penalized expectile regression (ER-EN) model. We then adopt the semismooth Newton coordinate descent (SNCD) algorithm to solve the proposed ER-EN model in high-dimensional settings. The advantages of ER-EN model are illustrated via extensive Monte Carlo simulations. The numerical results show that the ER-EN model outperforms the elastic-net penalized least squares regression (LSR-EN), the elastic-net penalized Huber regression (HR-EN), the elastic-net penalized quantile regression (QR-EN) and conventional expectile regression (ER) in terms of variable selection and predictive ability, especially for asymmetric distributions. We also apply the ER-EN model to two real-world applications: relative location of CT slices on the axial axis and metabolism of tacrolimus (Tac) drug. Empirical results also demonstrate the superiority of the ER-EN model.     

Outlier detection and robust variable selection via the penalized weighted LAD-LASSO method

This paper studies the outlier detection and robust variable selection problem in the linear regression model. The penalized weighted least absolute deviation (PWLAD) regression estimation method and the adaptive least absolute shrinkage and selection operator (LASSO) are combined to simultaneously achieve outlier detection, and robust variable selection. An iterative algorithm is proposed to solve the proposed optimization problem. Monte Carlo studies are evaluated the finite-sample performance of the proposed methods. The results indicate that the finite sample performance of the proposed methods performs better than that of the existing methods when there are leverage points or outliers in the response variable or explanatory variables. Finally, we apply the proposed methodology to analyze two real datasets.     

绿色贸易壁垒对广西农产品出口的影响及其法律对策

随着关税等传统壁垒在国际贸易中作用的减弱,绿色贸易壁垒逐渐成为国际贸易中的主要保护措施。广西是一个经济欠发达地区,其农产品出口近年来遭受了绿色贸易壁垒的打击。广西应采取完善国际性的环境保护公约内容,完善国内的环境保护立法,积极推行ISO 14000国际系列标准,完善外商投资规则,加速绿色食品的生产,积极起诉明显带有歧视性的绿色贸易壁垒等法律对策。     

应用现代教育技术提高教育教学质量

现代教育技术朝着智能化、多媒化、网络化的方向发展,具有教学信息资源和信息渠道多元化、课堂教学开放化、教学手段智能化以及教学过程情景化等特点。而课堂教学现代化是提高教学质量的有效途径,通过合理应用现代教育技术手段,使教学效果达到最优化。     

Hard thresholding regression

In this paper, we propose the hard thresholding regression (HTR) for estimating high‐dimensional sparse linear regression models. HTR uses a two‐stage convex algorithm to approximate the ?₀‐penalized regression: The first stage calculates a coarse initial estimator, and the second stage identifies the oracle estimator by borrowing information from the first one. Theoretically, the HTR estimator achieves the strong oracle property over a wide range of regularization parameters. Numerical examples and a real data example lend further support to our proposed methodology.     

论国有资本初始委托人缺位问题

在国有资本委托代理关系的两级体系中,初始委托人是全体公民。初始委托人缺位使得两级体系的链条处于"断裂"状态。国有企业改革的总体思路应当转变到第一级委托代理体系(从公民到政府的委托代理关系)的改革上,目标是让初始委托人到位,使两级体系的委托代理链趋于完整。     

程敏政“道一”论与阳明心学的形成

探究明朝中期王阳明心学思想的成因,是宋明理学研究的重要议题。阳明心学之源既有远承孟子和陆九渊的心学因素,也有同时代周边学者的商讨切磋之功。而作为王阳明的座主,程敏政以"道具于心"的"道一"思想,曾深刻地影响了王阳明学术的致思趋向,为心学的兴起导引先路,提供了契机。可以说,程敏政"道一"论是阳明心学形成的源头之一。