61 research outputs found
A Study on Stereo Vision System with Volume Perception Considering Binocularly Unpaired Regions
電気通信大学200
Observation of the induced pressure in a hybrid micro/nano-channel
This paper studies the flow characteristics in micro/nano-channels subjected to an applied electric field. The nano-channel flow was observed by means of the fluorescence Calcein. A Fluorescence Concentration Gradient Interface (FCGI) was observed across the nano-channel array. The front of the FCGI was shown to have an analogous parabolic shape. The propagation of this interface reflects indirectly the induced pressure at the micro/nano-channel junction, where the enrichment-depletion processes are known to take place. This induced pressure was predicted by numerical simulations, and this paper gives the first experimental evidence
稀土掺杂ZnS纳米晶中稀土离子与纳米基质之间的能量传递
以甲基丙烯酸为表面包覆剂在水/醇溶液中合成了ZnS:Eu~3+, ZnS:Tb~3+纳米晶,用傅里叶变换红外光谱和X射线粉末衍射谱表征了样品的表面与晶型,样品均为立方闪锌矿型,没有出现与稀土离子相关的相;用光致发光和激发谱研究了样品中的发光过程,其中ZnS:Tb~3+纳米晶中存在纳米基质与Tb~3+之间的能量传递,并引起Tb~3+的特征发射
fine-grained controllable delegation authorization model based on trustworthiness
综合基于角色的访问控制和信任管理各自的优势,提出了一个适用于开放式环境的细粒度可控委托授权模型--FCDAM(fine-grained controllable delegation authorization model),基于信任度实现了对角色中具有不同敏感度的权限传播控制.提出了为本地策略中的权限分配信任度阈值的方法,为RT_0添加了信任度支持,给出了在这种扩展后的信任管理系统中计算实体信任度的算法,并结合具体实例对模型的使用进行了说明
耐受极高浓度CO2藻类的研究及其在固碳领域的应用
综述了极高CO2浓度对耐受性藻类在生长、生理生化和分子水平上的影响,以及藻类适应极高CO2浓度的机理,并结合藻类生物技术分析了耐受性藻类在生物固碳领域的应用前景和途径.在此基础上,提出了一种利用藻类固定CO2以缓解日趋严重的温室效应的新思路
- …