CALIS分布式联合虚拟参考咨询系统的开发

介绍了CALIS分布式联合虚拟参考咨询系统(DCVRS)的开发,包括系统的架构、组成、功能以及相关标准等。DCVRS项目的目的是为CALIS成员馆提供一个联合虚拟参考咨询服务平台,沟通咨询馆员与读者,真正实时地解答读者在使用数字图书馆中第一时间所发生的问题;同时也有助于推动与国内外虚拟参考咨询的合作以及相关标准技术的发展。     

一阶扩展Cooper变换改进型

提出一种一阶扩展A型Cooper变换改进型模式,用结构归纳法证明了其正确性,并给出应用示例。     

Understanding the Nature,Uses, and Gratifications of Social Television: Implications for Developing Viewer Engagement and Network Loyalty

This study employed an online survey (N = 310) to explore how viewers’ motivations for social TV participation influence their involvement in social TV activities, their program commitment, and network loyalty. Findings show that social infotainment and social companionship are the primary motivations of social TV participation. However, only social infotainment significantly predicts the intensity of viewers’ social TV usage, which has a positive influence on program commitment and network loyalty. Additionally, the relationship between social TV usage and network loyalty is partially mediated by program commitment. These findings demonstrate the value of social TV to broadcasters and provide directions for initiating and maintaining long-term relationships with viewers.     

复旦大学图书馆数学类英文图书引进及保障数据集

运用引文分析法,选取国内外高校使用的数学类经典教材所引用的参考文献,并对这些参考文献中的英文图书进行引文量统计。继而分别对复旦大学图书馆及CALIS中心数学类英文图书的保障率进行排查检索和测评。共有引文记录10519条,去重后共计8166条英文图书书目信息。本数据集可以对目前我国高等院校图书馆的专业学科类英文图书资源引进和利用提供有效评估和国际参考。     

A comparison of two approaches for measuring interdisciplinary research output: The disciplinary diversity of authors vs the disciplinary diversity of the reference list

This study investigates the convergence of two bibliometric approaches to the measurement of interdisciplinary research: one based on analyzing disciplinary diversity in the reference list of publications, the other based on the disciplinary diversity of authors of publications. In particular we measure the variety, balance, disparity and integrated diversity index of, respectively, single-author, multi-author single-field, and multi-author multi-field publications. We find that, in general, the diversity of the reference list grows with the number of fields reflected in a paper’s authors’ list and, to a lesser extent, with the number of authors being equal the number of fields. Further, we find that when fields belonging to different disciplines are reflected in the authors’ list, the disparity in the reference list is higher than in the case of fields belonging to the same discipline. However, this general tendency varies across disciplines, and noticeable exceptions are found at individual paper level.     

小小一槽水,激活一堂课——有感于一节物理课的导入

在一节讲授《光的反射》的课堂上,老师先在讲台上放上一槽水,等水面静止后,用手电筒光倾斜照射水面,让学生在教室的墙壁上寻找亮斑,然后改变手电筒照射的角度,     

DSⅡ方程的Darboux变换及其孤立子解

本文找到了DSⅡ方程的Darboux变换,利用所给出的Darboux变换求得了DS Ⅱ方程的一簇解。还利用[1]中给出的规范变换自然地得到(2+1)维Heisenberg链的无限多个解。     

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.     

Identification of twist-angle-dependent excitons in WS2/WSe2 heterobilayersOA

Stacking atomically thin films enables artificial construction of van der Waals heterostructures with exotic functionalities such as superconductivity, the quantum Hall effect, and engineered light-matter interactions.In particular, heterobilayers composed of monolayer transition metal dichalcogenides have attracted significant interest due to their controllable interlayer coupling and trapped valley excitons in moiré superlattices. However, the identification of twist-angle-modulated optical tr...     

基于GIS网络分析的龙岩城市公园可达性研究

以ArcGIS10.5软件模拟步行、非机动车和机动车三种出行方式,结合城市人口分布数据,从公园个体和整体两个角度分析龙岩市主城区内7个城市公园可达性.结果表明:公园地理位置集中于中部,分布不均,城市路网不完善;机动车可达效果最佳,20min内可达面积比为56.62％,人口比为71.23％;整体上公园的可达面积、人口比较...