Scaling and Sustaining Effective Early Childhood Programs Through School–Family–University Collaboration

We describe the development, implementation, and evaluation of a comprehensive preschool to third grade prevention program for the goals of sustaining services at a large scale. The Midwest Child–Parent Center (CPC) Expansion is a multilevel collaborative school reform model designed to improve school achievement and parental involvement from ages 3 to 9. By increasing the dosage, coordination, and comprehensiveness of services, the program is expected to enhance the transition to school and promote more enduring effects on well‐being in multiple domains. We review and evaluate evidence from two longitudinal studies (Midwest CPC, 2012 to present; Chicago Longitudinal Study, 1983 to present) and four implementation examples of how the guiding principles of shared ownership, committed resources, and progress monitoring for improvement can promote effectiveness. The implementation system of partners and further expansion using “Pay for Success” financing shows the feasibility of scaling the program while continuing to improve effectiveness.     

教师教育转型期的几点思考

一、教师教育转型:地方新建本科院校传统师范类专业发展趋势地方新建本科院校其前身大多是地区性师范高等专科学校。在师专时代,这类学校的师范教育办得是有成绩的,为本地区输送了一大批高质量的教师。申报本科专业时,也大多是依托原有师范专业,加上“兼非师范”的字眼,才通过了专家组的评估。升本后这几年各学校发展很快,专业也逐年增加。这类新建地方本科院校,大多定位综合性本科院校,因此在办学过程中各专业也向综合性专业看齐。不可否认,不少学校因为是与其他类型的专科学校合并升格的,一些非师范性专业办得确实不错。但是那些传统的师…     

对甲苯磺酸催化合成橙花素

介绍了乙醇和 β -苯酚为原料 ,在对甲苯磺酸催化下合成橙花素的方法 ,讨论了反应时间、催化剂用量、反应摩尔比对合成工艺的影响     

Onset of channeling during DNA electrophoresis in a sparse ordered post array

The “channeling hypothesis” of DNA electrophoresis in sparse, ordered arrays of posts predicts that the DNA will move through the array relatively unhindered if (i) the spacing between the posts is larger than the DNA coil and (ii) the electric field lines are straight. We tested this hypothesis by studying the electrophoretic separation of a small plasmid DNA (pUC19, 2686 base pairs) and a large, linear DNA (λ-DNA, 48 500 base pairs) in a hexagonal array of 1 μm diameter posts with a pitch of 7 μm. At low electric field strengths, these DNAs are separated due to the long-lived, rope-over-pulley collisions of λ-DNA with the posts. The resolution is lost as the electric field increases due to the onset of channeling by the λ-DNA. Using a diffusive model, we show that channeling arises at low electric fields due to the finite size of the array. This channeling is not intrinsic to the system and is attenuated by increasing the size of the array. Higher electric fields lead to intrinsic channeling, which is attributed to the disparate time scales for a rope-over-pulley collision and transverse diffusion between collisions. The onset of channeling is a gradual process, in agreement with extant Brownian dynamics simulation data. Even at weak electric fields, the electrophoretic mobility of λ-DNA in the array is considerably higher than would be expected if the DNA frequently collided with the posts.     

论现代图书馆的人文关怀

文章分析了人文关怀在现代图书馆中的具体体现,并提出了现代图书馆实现人文关怀的对策.参考文献3.     

基于.NET的XQuery处理器网站的实现与应用

XML文档通常用于数据的描述、存储和交换，缺乏有效的信息查询手段将限制其进一步的应用。本文简介了XML查询语言XQuery，探讨了基于ASP.NET的XQuery处理器网站的功能和实现，描述了.NET平台下XQuery处理器的技术要点和实现代码，给出并分析了XQuery在图书管理中的几个应用实例。     

云计算环境下数字图书馆信息安全研究

云计算技术的迅速发展给图书馆的管理与服务带来深刘变革,给互联网环境下数字图书馆信息资源中心作用的发挥带来了机遇。但同时因为云计算作为一种新技术,还存在许多欠缺和问题,而云计算的安全问题是制约它的应用与发展的一个核心问题。云计算环境下的数字图书馆则同样面临着更为严峻的信息安全问题。针对一系列的安全问题,文章提出云环境下数字图书馆信息安全机制。     

综合性大学在校生移动阅读行为特征研究——基于用户体验的视角

采用用户体验、追踪访谈等实证研究方法,以武汉大学移动图书馆为例,从阅读时间、获取方式、阅读内容、阅读便利4个维度研究发现用户移动阅读认知和体验的行为特点：实验前对图书馆移动阅读服务了解少;实验者随时随地进行碎片化阅读,但受WiFi热点分布影响;对休闲娱乐类资源粘性强,对学术性内容阅读较少。基于此,为综合性高校图书馆移动阅读服务设计优化提出建议。     

博物馆中面向图像需求表达的标签分类研究

[目的/意义]为缩小博物馆图像检索中的语义鸿沟现象,探究社会标签及其分类机制在博物馆资源组织中的应用价值,以期进一步推进文化遗产在博物馆中的虚拟展示并提高其资源访问率。[方法/过程]将现有的图像需求表达分类框架进行扩展,构建社会标签分类模型,搭建社会标签分类平台,研究标签分布与用户语言表达规律。[结果/结论]研究表明:用户更偏好描述图像的主题内容而非其外部特征,更习惯使用通用类型的语词来表达图像主题内容,更倾向于描述人或物的相关内容。     

本体与关联数据驱动的图书馆信息资源语义整合方法及其测评

探索语义网技术在图书馆信息资源整合中的应用。 首先,提出一个本体与关联数据驱动的资源语义整合框架, 实现：①图书馆中不同格式、不同类型文献资源的整合;②不同数据集合中信息资源的语义整合;③图书馆馆藏资源与外界相关资源的链接与集成, 从而构成一个可无限延伸与扩展的开放的资源整合体系。其次,构建一个资源整合演示系统。 最后,将该系统与使用传统资源整合方式的CALIS OPAC系统和CNKI进行实验对比。