新世纪前后中国文学版图中的“宁夏板块”

“宁夏文学”在中国当代文学史上占有一席之地，始于社会主义新时期。20世纪80年代，张贤亮以其饱经沧桑和忧患之后的慷慨悲歌征服了大江南北。张贤亮的小说创作，不仅提升了宁夏文学总体的创作水平，也为宁夏文学在中国文坛赢得了美好声誉。进入20世纪90年代，宁夏文学在略事犹豫和徘徊之后，终于在新世纪前后，再次向中国文坛奉献了“宁夏青年作家群”。这一创作群体的崛起，不仅给新世纪前后的中国文学界吹来一股清新怡人的创作之风，而且，这一与广阔深厚的中国古老土地和“中国经验”血脉相连，并因此取得了不凡文学业绩的青年创作群体的成功，也充分证明，在市场经济条件下，居于偏远地区的文学创作事业，只要领导得法，调动有方，是可以走在全国前列的。     

以学生为中心,加强系列课程教学团队建设——以合肥工业大学为例

高水平的教学团队建设是教育部本科教学质量与教学改革工程的重要内容之一。文章主要介绍信号检测、处理及实现系列课程教学团队建设思路,以学生为中心,注重学习产出,将课堂教学、创新实践和科学研究有机结合,建立健全的运行机制,使之在教学改革中发挥积极有效的作用,促进团队成员的综合素质的提高,保证人才培养的质量。     

Interquantile shrinkage in additive models

In this paper, we investigate the commonality of nonparametric component functions among different quantile levels in additive regression models. We propose two fused adaptive group Least Absolute Shrinkage and Selection Operator penalties to shrink the difference of functions between neighbouring quantile levels. The proposed methodology is able to simultaneously estimate the nonparametric functions and identify the quantile regions where functions are unvarying, and thus is expected to perform better than standard additive quantile regression when there exists a region of quantile levels on which the functions are unvarying. Under some regularity conditions, the proposed penalised estimators can theoretically achieve the optimal rate of convergence and identify the true varying/unvarying regions consistently. Simulation studies and a real data application show that the proposed methods yield good numerical results.     

公益诉讼费用分担方式的构建

公益诉讼费用是公益诉讼必然面临的问题,其合理与否极大地关系着人们享受法律保障的程度。但公益诉讼往往诉讼成本高,导致公益诉讼难以取得理想的预期效果,而现行的诉讼费用分担方式并不能完全适应公益诉讼的发展需要。因此,应从被告方分担、受益者分担、国家分担三方面入手,通过设立公益诉讼奖励基金以及费用移转支付的方式,建立起一个与公益诉讼理念相契合的公益诉讼费用分担方式。     

“A stitch in time”: group work during the covid-19 scare in the Nicobar Islands,India

ABSTRACT

When India suddenly went into its first coronavirus-induced nationwide lockdown in March 2020, several members of a historically isolated indigenous community in the eastern Indian ocean- the Nicobarese, began to panic. Their leaders came together and formed a group to boost community solidarity and helped the vulnerable indigenes to safely navigate through the crisis. In these uncertain times of Covid-19, when the “modern” world appears more fissured than ever, leaving its “others” to fend for themselves; the Nicobarese’s group has set an example for everyone to follow.     

广义ATO下基于多种团购模型的供应链协调

针对由多个供应商、单个制造商和零售商所组成的广义按订单装配式供应链，在上游多个供应商不确定的零部件（或商品）供应以及下游客户不确定的需求的环境下，首先分析基本模型中团购前后的零售商和制造商的利润变化，然后提出了团购的标准模型和协调模型，并比较三种不同的团购模型对各成员以及全局供应链绩效的影响。通过数学推导证明和仿真数据算例分析，结果表明：零售商自发的团购基本模型总是对制造商有利，而对零售商的好处是有限的；由制造商主导的团购标准模型在满足一定条件时是优于团购基本模型的，但有使得零售商甚至制造商自身受到损失的可能；而集中决策下的团购协调模型能够提升全局供应链的期望利润，实现渠道的帕累托改善，但协调的效果会受到团购客户组成结构的限制。     

Social Cognitive Factors,Support, and Engagement: Early Adolescents’ Math Interests as Precursors to Choice of Career

The authors examined the central hypothesis that students’ early perceptions of support and sense of engagement in math classes and math activities strongly influence the broadening or narrowing of their math interest. The focus was on the first wave of qualitative data collected from 5th‐, 7th‐, and 9th‐grade students during the 2007–2008 academic year as part of a longitudinal study. Findings indicate the importance of using group work and extrinsic motivation in middle school math classes to broaden interest; peer classroom behavior was often a detractor of math interest.     

国债收益率协整关系研究

通过对中国国债收益率与央票利率、基准利率和CPI的协整关系研究,揭示出我国国债市场的收益率走势与各宏观经济变量之间的互动关系。研究结果表明:在不施加任何约束的条件下,我国国债市场的风险长期来看是可以规避的,而国债与央票之间具有互动关系,二者的利率风险具有一定的互补性。