排序方式： 共有140条查询结果，搜索用时 31 毫秒
1.
Jiawei Huang Mahda M. Bagher Heather Dohn Ross Nathan Piekielek Jan Oliver Wallgrün Jiayan Zhao 《Journal of Map & Geography Libraries》2018,14(1):40-63
Libraries have been the key to preserving culture and historic legacy for centuries. One such treasure cataloged in The Pennsylvania State University (Penn State) Libraries is a collection of over 33,000 Sanborn? Fire Insurance Maps. Originally kept safe in metal drawers, the library has embarked on a journey to digitize this abundance of information, combine it with other media such as photographs, and make it accessible through a web interface. Inspired by these efforts, we accessed this information and took it to the next level. Using state of the art 3D modeling and immersive technologies, we created a historic 3D model and immersive experiences of Penn State, exemplarily for the 1922 campus. The resulting experiences can be accessed through the web but also through head mounted displays (HMDs) and mobile phones in combination with VR viewers such as the Google Cardboard. Additionally, they can be used anywhere in the world or on the campus itself as a way to enable remote and in situ experiences and learning. Immersive experiences let us connect to the past, the present and the future, and as such offer value to digital cultural heritage efforts. 相似文献
2.
水银在物理实验中有广泛的应用,例如利用水银做托里拆利实验测大气压的值,做玻意耳--马略特定律的实验;在电学实验中有时把水银当作接线柱用(温度自动报警器)等,但是实验后,水银常混有脏物和杂质,或由于不慎将水银撒在地上,因此对污浊的水银必须进行清洗和收集. 相似文献
3.
In this paper, the effects of second-order difference-frequency wave forces on the global motion of an offshore wind turbine system with a large displacement under the survival condition are studied. In this case, the hydrodynamic force is the main force because the blades are feathered to reduce the lifting force. The first-order hydrodynamic forces are calculated by WADAM, while the second-order wave forces are calculated by a customized MATLAB module. Then the hydrodynamic coefficients are transferred to the wind turbine analytical code FAST. Through the comparisons of dynamic responses between the first- and second-order numerical models, it is found that the second-order wave forces significantly influence the motion of floating wind turbine under the survival condition. Moreover, neglecting the second-order force significantly underestimates the tension forces in the mooring lines. 相似文献
4.
西方话语体系中的市民社会,因时期和国家的不同而具有不同的涵义。从是否具有市场经济的基础、公共领域、社会团体的参与、与国家的关系等四个方面可以来判定市民社会的发育。晚清民间慈善活动在传统慈善的基础上产生了新的内容,这些慈善活动基于经济的发展而产生,并构成了一定的公共领域,且产生了脱离血缘的参与主体,实现了慈善组织的联合。它不仅体现出了市民社会的发育,也反映了晚清市民社会发育的独特之处。 相似文献
5.
6.
Ying Xing Zhibin Shao Jun Ge Jiawei Luo Jinhua Wang Zengwei Zhu Jun Liu Yong Wang Zhiying Zhao Jiaqiang Yan David Mandrus Binghai Yan Xiong-Jun Liu Minghu Pan Jian Wang 《国家科学评论(英文版)》2020,7(3):579
The search for unconventional superconductivity in Weyl semimetal materials is currently an exciting pursuit, since such superconducting phases could potentially be topologically non-trivial and host exotic Majorana modes. The layered material TaIrTe4 is a newly predicted time-reversal invariant type II Weyl semimetal with the minimum number of Weyl points. Here, we report the discovery of surface superconductivity in Weyl semimetal TaIrTe4. Our scanning tunneling microscopy/spectroscopy (STM/STS) visualizes Fermi arc surface states of TaIrTe4 that are consistent with the previous angle-resolved photoemission spectroscopy results. By a systematic study based on STS at ultralow temperature, we observe uniform superconducting gaps on the sample surface. The superconductivity is further confirmed by electrical transport measurements at ultralow temperature, with an onset transition temperature (Tc) up to 1.54 K being observed. The normalized upper critical field h*(T/Tc) behavior and the stability of the superconductivity against the ferromagnet indicate that the discovered superconductivity is unconventional with the p-wave pairing. The systematic STS, and thickness- and angular-dependent transport measurements reveal that the detected superconductivity is quasi-1D and occurs in the surface states. The discovery of the surface superconductivity in TaIrTe4 provides a new novel platform to explore topological superconductivity and Majorana modes. 相似文献
7.
浅谈高校科技创新团队的建设和管理 总被引：1，自引：0，他引：1
以高校科研创新团队的建设和管理为研究对象,通过查阅和研究相关中外文献,介绍我国高校科研创新团队的定义、特点和运作现状;归纳出高校科研创新团队建设的关键要素,提出从制度建设、评估体系、激励机制以及资源分配方式等四个管理要点来加强与优化高校科技创新团队的建设和管理;介绍中山大学创新团队建设和管理的经验,提出组建高校创新联盟以实现高校科技创新团队的可持续性发展。 相似文献
8.
现代科学博物馆与传统珍品收藏所的根本区别之一,即“藏品转化为展品”。对于科学博物馆来说,其展览品质和功能的实现,很大程度上取决于藏品转化为展品的深度和质量。通过理论研究和实践分析,笔者提出“图文转化”“多媒体转化”“机械与机电互动转化”和“叙事场景转化”四种藏品向展品的转化模式,旨在充分激活藏品功能,挖掘出其中的信息内涵并呈现给观众,最终实现展品展陈及博物馆教育的多重价值。 相似文献
9.
文章运用文献资料等研究方法,就功能性训练的特点及其在青少年篮球运动员运动损伤预防中的作用进行了分析。功能性训练强调完整功能链、强调动作模式训练等理念,具有"与传统力量训练良性互补"、"注重训练过程诊断"和"强调动作模式设计"等特点,对预防青少年篮球运动员的弱链损伤、机体力量发展不平衡和技术动作不正确等问题具有积极作用,应引起运动员和教练员的高度关注。 相似文献
10.
以2020-2021赛季CBA常规赛后卫球员的攻防能力作为研究对象,对后卫球员的主要攻防指标进行因子分析,构建了后卫球员攻防能力的综合评价模型。结果显示:后卫球员攻防能力主要受投篮稳定能力、三分能力、地面攻防能力和空中对抗能力的影响;通过评价模型得出的后卫球员攻防能力综合得分及排序,与球员的综合实力和比赛表现趋于一致。 相似文献