新时代高等教育评价的运行逻辑及转型路径

2020年10月,中共中央、国务院印发《深化新时代教育评价改革总体方案》,要求改进高等教育评价。文章通过对传统高等教育评价与高质量高等教育评价运行逻辑的对比,发现高等教育评价转型面临实践困境,主要表现为高等教育评价价值遮蔽、高等教育评价管理失调及高等教育体系失真等。据此提出新时代高等教育评价转型路径：价值同构,重塑以人为本的高等教育质量观;主体协同,提升高等教育评价政策执行效能“;道“”术”统合,推进高等教育评价体系现代化。     

Injectable hybrid inorganic nanoscaffold as rapid stem cell assembly template for cartilage repair

Cartilage injuries are often devastating and most cannot be cured because of the intrinsically low regenerative capacity of cartilage tissues. Although stem-cell therapy has shown enormous potential for cartilage repair, the therapeutic outcome has been restricted by low survival rates and poor chondrocyte differentiation in vivo. Here, we report an injectable hybrid inorganic (IHI) nanoscaffold that facilitates fast assembly, enhances survival and regulates chondrogenic differentiation of stem cells. IHI nanoscaffolds that strongly bind to extracellular matrix (ECM) proteins assemble stem cells through synergistic 3D cell–cell and cell–matrix interactions, creating a favorable physical microenvironment for stem-cell survival and differentiation in vitro and in vivo. Additionally, chondrogenic factors can be loaded into nanoscaffolds with a high capacity, which allows deep, homogenous drug delivery into assembled 3D stem-cell-derived tissues for effective control over the soluble microenvironment of stem cells. The developed IHI nanoscaffolds that assemble with stem cells are injectable. They also scavenge reactive oxygen species and timely biodegrade for proper integration into injured cartilage tissues. Implantation of stem-cell-assembled IHI nanoscaffolds into injured cartilage results in accelerated tissue regeneration and functional recovery. By establishing our IHI nanoscaffold-templated 3D stem-cell assembly method, we provide a promising approach to better overcoming the inhibitory microenvironment associated with cartilage injuries and to advance current stem-cell-based tissue engineering.     

江西移民记忆中的瓦屑坝

这里是废墟,数不清的瓦屑陶片堆起了一条长坝,片片瓦砾散落在绿杨衰草之间,流水泥沙之中。昔日的荣华变成了遐想,变成了供人凭吊的沼泽,绿装翠盖的芦苇芰荷遍布其间。几百万江西移民曾经带着诀别,带着失落从这里出发,渡过茫茫大湖,驶向一个未知的远方……     

"十一五"期间我国高职教育规模发展途径及应注意的问题

“十一五”期间,我国高职教育的规模仍将不断发展。强化特色,进一步落实办学自主权,划转部分第三层次的普通高校举办高职教育等是高等职业教育规模发展的重要途径。在高职教育规模发展过程中还要注意规模与质量、就业之间的关系,注意合理构建高职教育的层次结构,完善高职教育的专业布局,实现高职和中职的有效衔接。     

地区法律保护与企业创新

基于各地区市场中介组织的发育和法律制度环境指数,以及手工搜集的各上市公司专利数据,利用Tobit回归模型,考察法律保护对企业创新的影响。研究发现:知识产权保护、市场组织服务条件显著地促进了企业创新,说明法律保护为企业创新活动提供了激励;对国有企业而言,律师、会计师等市场组织服务条件对于企业创新活动的影响不明显,表明国有企业在市场组织服务方面占有资源优势从而较少受到其约束;在社会信任程度低的地区,企业创新对法律保护的依赖程度更高,这反映了社会资本不足时,正式制度对市场发展的重要作用。     

基于车辆自动定位系统数据的地面公共交通运行时间可靠性分析(英文)

为了给公交线路车辆调度提供重要参数及给公交运营管理和居民公交出行提供决策依据,应用车辆自动定位系统数据对公共交通运行时间可靠性进行了分析. 基于对公共交通运行时间的统计分析,提出变异系数、分布宽度、运行速度、堵率、规划时间、预留时间等 6 个指标,构建了公共交通运行时间可靠性评价分析框架. 苏州市某公交线路实例分析结果表明,所提出的评价指标体系简单直观,能有效反映该线路公交车辆运行的效率和稳定性,且公共交通运行时间可靠性具有随不同时段变化的特征.     

职高学生参加体育活动兴趣的调查与分析

运用文献、调查和对比等多种研究方法,对平阳县职业技术学校520名学生参加体育活动兴趣进行调查分析,针对学生参加体育兴趣不高的原因,提出相应的对策与措施,以增强学生的体育意识,提高体育健身的能力,养成体育锻炼的习惯,达到终身受益的目的。     

区域一体化对城市创新能力驱动研究——基于长三角的实证分析

长三角更高质量一体化发展标志着各种资源要素在长三角区域内的配置效率将进一步提升,有利于形成更强的区域创新能力。本文基于2005—2017年长三角城市统计数据,考察了区域一体化对城市创新能力的驱动作用,并对其中的影响机制和异质性进行了深入分析。结果显示：(1)区域一体化对长三角城市创新能力具有显著的促进作用。(2)机制分析发现,一体化伴随的产业集聚并未形成创新能力提升机制,但一体化推动的区域内部产业转移机制有效提升了城市创新能力。(3)异质性分析表明,长三角区域一体化对非核心城市、欠发达城市、低财政分权城市具有更为显著的城市创新能力驱动作用。     

Water molecules bonded to the carboxylate groups at the inorganic–organic interface of an inorganic nanocrystal coated with alkanoate ligands

High-quality colloidal nanocrystals are commonly synthesized in hydrocarbon solvents with alkanoates as the most common organic ligand. Water molecules with an approximately equal number of surface alkanoate ligands are identified at the inorganic–organic interface for all types of colloidal nanocrystals studied, and investigated quantitatively using CdSe nanocrystals as the model system. Carboxylate ligands are coordinated to the surface metal ions and the first monolayer of water molecules is found to bond to the carboxylate groups of alkanoate ligands through hydrogen bonds. Additional monolayer(s) of water molecules can further be adsorbed through hydrogen bonds to the first monolayer of water molecules. The nearly ideal environment for hydrogen bonding at the inorganic–organic interface of alkanoate-coated nanocrystals helps to rapidly and stably enrich the interface-bonded water molecules, most of which are difficult to remove through vacuum treatment, thermal annealing and chemical drying. The water-enriched structure of the inorganic–organic interface of high-quality colloidal nanocrystals must be taken into account in order to understand the synthesis, processing and properties of these novel materials.     

“东方之冠”大放异彩

2010年2月8日上午,位于上海浦东的上海世博会标志性建筑中国馆竣工仪式在世博园核心区举行。 一座什么样外观的东道主展馆,最能代表既古老又现代的中国？这座展馆“穿”上什么颜色的“外衣”,才能体现中国深厚的文化底蕴以及亿万中国人独特的情怀？什么样的奇思妙想、精彩设计,才“配得上”展示“城市发展中的中华智慧”？