政府网站信息资源知识元模型与可视化表征研究

[目的/意义]利用知识元模型理论研究政府网站知识服务效果的优化路径,辅以可视化表征技术,以降低大数据环境下政务用户信息获取的操作负载和知识加工的认知负荷。[方法/过程]依据相关知识元模型研究推理出符合政府网站信息资源属性特征的六元组知识元表示方法和四元组知识元本体结构,采用TextRank与HDP算法分别抽取政府网站信息资源关键词和主题词,并由领域专家根据抽取结果确定知识元,构建包含知识元本体库生成和可视化知识服务的政府网站信息资源领域知识元可视化表征模型。[结果/结论]通过政府网站发布的共享单车实例检验知识元可视化表征模型的有效性和可行性,为实现政府网站粗粒度信息服务转向以知识元为单位的细粒度知识服务范式开辟了新的研究思路,可视化知识服务模式增强了政务信息导航的结构化和用户解读领域文本语义的效果。     

教材编辑如何苦练选题策划的内功

结合复旦大学出版社学前教育分社的实践,分析教材编辑如何苦练选题策划之前的准备之功,策划选题架构的内功,落实选题的内功,以及宣传和维护选题的内功.     

IP生态视域下移动阅读产业盈利模式创新研究

近年来中国移动阅读产值井喷式增长,市场格局明朗化,为谋求更好发展,企业亟须创新盈利模式.论文以IP生态为视域,从产业链的构成要素切入,探讨产业盈利模式的创新策略,得出如下几点:以知识付费为主的类众筹模式、以IP运营为核心的泛娱乐模式、以社交为切入点的阅读轻社交模式、以人工智能科技为契合点的定制化盈利模式、以原生广告为主的新型广告模式.     

生态主义视角下的社会主义新农村建设

社会主义新农村建设是我党在新的历史发展阶段提出来的,是构建社会主义和谐社会的需要.本文着重从生态主义的视角论述其在新农村建设过程中的实践意义:发展农村经济,实现农村经济、社会的可持续发展;发展农村基层民主和实现社会公正,实现政治民主和建设社会主义精神文明;调整农村社会关系,实现社会公正和环境正义;切实提高农民素质,改善农村地区生活环境,这一切都必须从生态主义的角度审视.只有这样才能实现我国农村地区的可持续发展,建成真正意义上的社会主义新农村.     

Will Earth's next supercontinent assemble through the closure of the Pacific Ocean?

Earth''s known supercontinents are believed to have formed in vastly different ways, with two endmembers being introversion and extroversion. The former involves the closure of the internal oceans formed during the break-up of the previous supercontinent, whereas the latter involves the closure of the previous external superocean. However, it is unclear what caused such diverging behavior of supercontinent cycles that involved first-order interaction between subducting tectonic plates and the mantle. Here we address this question through 4D geodynamic modeling using realistic tectonic set-ups. Our results show that the strength of the oceanic lithosphere plays a critical role in determining the assembly path of a supercontinent. We found that high oceanic lithospheric strength leads to introversion assembly, whereas lower strength leads to extroversion assembly. A theoretically estimated reduction in oceanic crustal thickness, and thus its strength, during Earth''s secular cooling indicates that introversion was only possible for the Precambrian time when the oceanic lithosphere was stronger, thus predicting the assembling of the next supercontinent Amasia through the closure of the Pacific Ocean instead of the Indian-Atlantic oceans. Our work provides a new understanding of the secular evolution of plate tectonics and geodynamics as the Earth cooled.     

Thermophysical properties of the regolith on the lunar far side revealed by the in situ temperature probing of the Chang’E-4 mission

Temperature probes onboard the Chang’E-4 (CE-4) spacecraft provide the first in situ regolith temperature measurements from the far side of the Moon. We present these temperature measurements with a customized thermal model and reveal the particle size of the lunar regolith at the CE-4 landing site to be ∼15 μm on average over depth, which indicates an immature regolith below the surface. In addition, the conductive component of thermal conductivity is measured as ∼1.53 × 10^–3 W m^–1 K^–1 on the surface and ∼8.48 × 10^–3 W m^–1 K^–1 at a depth of 1 m. The average bulk density is ∼471 kg m^–3 on the surface and ∼824 kg m^–3 in the upper 30 cm of the lunar regolith. These thermophysical properties provide important additional ‘ground truth’ at the lunar far side, which is critical for the future analysis and interpretation of global temperature observations.     

中国节庆旅游研究初探

传统节庆旅游资源是我国最具特色的旅游资源之一,发展节庆旅游对于丰富旅游产品和发展旅游业具有着重用意义。本文给出了节庆旅游的概念,指出了节庆旅游的作用,并对我国发展节庆旅游做了具体的SWOT分析,在此基础上提出了我国节庆旅游的发展对策。     

独立学院会计模拟实验室初探

在独立学院新型办学机制与模式下,会计模拟实验室在会计教学体系中的作用和地位显得尤为重要。本文从会计教学软硬件二维结构图出发,提出会计模拟实验是新时期会计教学的热点,会计模拟实验室建设是经济管理专业实验室建设的起点,并在此基础上探讨了会计模拟实验教学和会计模拟实验室建设过程中可能出现的误区和归避的方法。