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。     

社会化与产品化:档案学实践教育资源开发路径研究——以福建师范大学为例

档案学实践教育资源社会化开发与产品化运用模式,以高校-学生培养为中心,社会-企业需求为导向,市场-产品运用为基础,凝聚高校-社会-市场三维组织优势合力,其中社会化开发缩小了高校和社会之间的距离,产品化运用则是通过市场来对高校实践型、重技重能教育理念回归的重新确认,对提升档案学专业实践教学的整体水平以及培养技术型、应用型高级档案专业人才具有重要意义.     

一种基于相似度和信任度融合的微博内容推荐方法

[目的/意义]微博对用户获取信息和建立社交网络具有重要作用。提出一种基于相似度和信任度融合的微博内容推荐方法,能够从用户需求出发进行个性化微博内容推荐,对提高微博服务质量、改善信息过载问题具有意义。[方法/过程]基于相似度和信任度融合算法,构建微博内容推荐模型,以新浪微博为研究对象,采用编程方式获取汽车、体育、运动健身、互联网和财经5个领域的数据,展开用户相似度与信任度计算的实验分析和比较。[结果/结论]分析结果显示该方法可以有效表示和挖掘微博内容,改善微博推荐的准确性和用户满意度。     

Rollback,scissor-like closure of the Mongol-Okhotsk Ocean and formation of an orocline:magmatic migration based on a large archive of age dataOA

Tracing the closure of oceans with irregular margins and the formation of an orocline are crucial for understanding plate reconstruction and continental assembly.The eastern Central Asian Orogenic Belt,where the Mongol-Okhotsk orocline is situated,is one of the world’s largest magmatic provinces.Using a large data set of U-Pb zircon ages,we updated the timing of many published igneous rocks,which allowed us to recognize tightly ’folded’ linear Carboniferous-Jurassic magmatic belts that wrap arou...     

High-entropy-alloy nanoparticles with 21 ultra-mixed elements for efficient photothermal conversionOA

Multi-metallic nanoparticles have been proven to be an efficient photothermal conversion material, for which the optical absorption can be broadened through the interband transitions(IBTs), but it remains a challenge due to the strong immiscibility among the repelling combinations. Here, assisted by an extremely high evaporation temperature, ultra-fast cooling and vapor-pressure strategy, the arc-discharged plasma method was employed to synthesize ultra-mixed multi-metallic nanoparticles compose...     

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...     

Photonic orbital angular momentum with controllable orientation

Vortices are whirling disturbances, commonly found in nature, ranging from tremendously small scales in Bose-Einstein condensations to cosmologically colossal scales in spiral galaxies. An optical vortex, generally associated with a spiral phase, can carry orbital angular momentum (OAM). The optical OAM can either be in the longitudinal direction if the spiral phase twists in the spatial domain or in the transverse direction if the phase rotates in the spatiotemporal domain. In this article, we demonstrate the intersection of spatiotemporal vortices and spatial vortices in a wave packet. As a result of this intersection, the wave packet hosts a tilted OAM that provides an additional degree of freedom to the applications that harness the OAM of photons.     

多卷书取卷册号的体会

<正> 在分编图书时常会遇到多卷册图书,在编制索书号时,一定要将卷册号编入,以全面反映书名的内容范围,并使每种图书各自都具有不同的号码,以便于排分类目录和排架,因此在编制目录时,一定要重视卷册号,不能视为可有可无的东西。但在实际编目过程中,取卷册号时遇到的问题也是多种多样的,有的图书有明显的“卷”“册”“辑”“上、中、下”“第…卷”“第…册”“××年××期”等次第词或量词以表示多卷书的卷册,这种情况好处理,只需将该书的卷册或年期的次第数直接编入索书号即可。如《内科学》上、《红楼梦》下、《近代史资料》81年1期,总46号、《科学技术成果     

文化冲突视角下的流动人口犯罪研究

对流动人口犯罪的研究,仅从个体因素的角度无法透彻理解,从社会因素的角度理解也过于空泛,而文化冲突论则为解释流动人口犯罪问题提供了一个全角,它为解释流动人口问题犯罪提供的是一种个体化的社会原因,使流动人口犯罪得到合理的解释.     

"云娜"台风暴雨的Q矢量与螺旋度诊断分析

利用非地转ω方程说明了Q矢量散度的物理意义,并通过计算台风“云娜”影响过程中的Q矢量散度和高低空螺旋度,分析了这两个物理量的演变特征及其与台风、台风暴雨的关系,指出低层等压面上Q矢量散度场及相对螺旋度对台风暴雨预报具有较好的参考价值。