云计算平台下网络课堂生成性教学设计框架研究

针对远程教育中网络课堂存在的问题,更好地提高网络课堂的教学质量,实现"以学生为中心"的教学理念。根据生成性教学的基本思想,利用云计算平台的特征,设计和实践了基于云平台的生成性教学目标、开放性的教学活动、动态的课程资源、交互性的教学过程、发展性的教学评价等提高网络课堂生成性的措施,激发了学生自主学习的兴趣和热情,帮助他们体验新技术变革带来的学习快乐,并在Java语言程序设计网络课堂中得以实施,具有相当明显的教学效果。     

硫酸亚铁铵的制备反应条件与绿色化研究

对传统的硫酸亚铁铵制备实验进行了减量化、绿色化改造研究,通过实验条件的优化,提高了产品的产率和纯度。改进后的实验一方面减少了环境污染,增强了广大师生的环保意识,实现了实验教学的绿色化,另一方面降低了实验消耗、节省实验经费,全面提高人才的培养质量和效益。     

亚历山大数字图书馆——互联网上的地理信息资源中心

亚历山大数字图书馆项目（Alexandria Digital Library,ADL）是美国最大的、持续时间最长的数字图书馆研究项目之一,自1994年起连续得到了美国国家科学基金会（NSF）的美国数字图书馆倡导计划（Digital Library Initiative,DLI）长达十年的资助。该项目的重点在于设计并运行其颇有特色的地理参考数字图书馆。ADL是一个分布式参考资料数字图书馆,以各种数据来源的地图、图像和地理定位文献为主要收集对象,实现公众对地理空间信息对象的访问和搜索,是互联网上的地理信息资源中心。文章对该数字图书馆的项目背景、信息资源组织、服务和技术特点等进行了介绍和评价。     

Solid-state intramolecular motions in continuous fibers driven by ambient humidity for fluorescent sensors

One striking feature of molecular rotors is their ability to change conformation with detectable optical signals through molecular motion when stimulated. However, due to the strong intermolecular interactions, synthetic molecular rotors have often relied on fluid environments. Here, we take advantage of the solid-state intramolecular motion of aggregation-induced emission (AIE) molecular rotors and one-dimensional fibers, developing highly sensitive optical fiber sensors that respond to ambient humidity rapidly and reversibly with observable chromatic fluorescence change. Moisture environments induce the swelling of the polymer fibers, activating intramolecular motions of AIE molecules to result in red-shifted fluorescence and linear response to ambient humidity. In this case, polymer fiber provides a process-friendly architecture and a physically tunable medium for the embedded AIE molecules to manipulate their fluorescence response characteristics. Assembly of sensor fibers could be built into hierarchical structures, which are adaptive to diverse-configuration for spatial-temporal humidity mapping, and suitable for device integration to build light-emitting sensors as well as touchless positioning interfaces for intelligence systems.     

The Communication Anxiety Regulation Scale: Development and Initial Validation

A series of studies present the development and validation of the Communication Anxiety Regulation Scale (CARS), a self-report measure designed to assess the use of emotion regulation strategies to manage acute communication anxiety—in contrast to measures of general emotion regulation tendencies. Study 1 delineates the item derivation and selection process that yielded the final 12 CARS items. Results of an exploratory factor analysis supported the existence of four distinct subscales, each representing one of four anxiety regulation strategies (suppression, reappraisal, avoidance, and venting). Study 2 confirmed this factor structure and also examined correlations of the CARS with existing measures in an attempt to establish concurrent validity. Finally, Study 3 presents results of an item-sort task demonstrating the scale’s face validity and items’ substantive validity. Overall, findings provide preliminary support for the utility of the CARS as measure of communication anxiety regulation to be used by communication and psychology researchers.     

Use of Ethnographic Fiction in Social Justice Graduate Counselor Training

Ethnographic fiction is a technique for educating counseling students about the relationship of social justice to counseling practice. Preliminary data indicate it is an effective tool, with counseling students (N= 48) reporting an increased understanding and appreciation of clients’ life experiences from a holistic perspective. Furthermore, students reported that they were more motivated to address social justice issues in counseling.     

网络计量学的应用分析

分析网络计量学在数字图书馆建设、情报科学、网络搜索引擎、网站建设与评价、社会科学研究、科技发展与科技决策、社会生活中的应用。     

一种基于视频的DEW水印算法

采用差分能量水印(DEW)算法,对视频数字作品进行了数字水印的嵌入、检测和提取研究。实验结果表明,该算法计算简单、速度快、易于实现,视频信号里可编码的数据量大,可以隐藏较多的信息,并且还可以满足水印的实时嵌入和提取。     

基于混合神经网络编队协同空战决策支持系统

针对缺少先验知识的前提下,提出一种混合神经网络编队协同空战决策支持系统,同时采用一种无教师—有教师的混合训练算法来训练混合神经网络。仿真结果表明该系统的有效性。