[目的/意义]对大数据时代国内外个人信息保护的研究热点和演化趋势进行了总结和回顾,旨在为相关领域的研究提供参考和启示。[方法/过程]运用文献计量法和科学知识图谱法,基于CNKI和Web of Science数据库,以ITGInsight为主体工具,再辅之G...[目的/意义]对大数据时代国内外个人信息保护的研究热点和演化趋势进行了总结和回顾,旨在为相关领域的研究提供参考和启示。[方法/过程]运用文献计量法和科学知识图谱法,基于CNKI和Web of Science数据库,以ITGInsight为主体工具,再辅之Gephi、Excel、SATI等科学计量与知识网络分析软件,对大数据领域国内外个人信息保护研究领域的热点分布、主题演化以及研究内容进行分析。[结果/结论]大数据时代国内外个人信息保护相关研究主题分布广泛、演化规律较为复杂,呈现出显著的变化趋势,在未来的研究中,需要综合考虑技术、法律、政策等多个方面的因素,以构建更加全面、系统的个人信息保护体系。展开更多
声学黑洞(Acoustic Black Hole,ABH)技术作为一种新型高效的能量聚焦以及振动控制技术,在减振降噪方面具有很好应用潜力。铝型材板结构作为一种夹层结构,具有高比刚度和高比强度等优异轻量化特性,广泛应用于列车外地板、船舶、航空航天...声学黑洞(Acoustic Black Hole,ABH)技术作为一种新型高效的能量聚焦以及振动控制技术,在减振降噪方面具有很好应用潜力。铝型材板结构作为一种夹层结构,具有高比刚度和高比强度等优异轻量化特性,广泛应用于列车外地板、船舶、航空航天等领域中。为了探究ABH和铝型材板结构相结合后是否还具有典型的ABH效应,运用有限元数值模拟方法研究嵌入式ABH铝型材板结构的振动能量聚焦特性。对于频点和频带聚焦特性分析结果表明,在铝型材板结构中嵌入ABH特征结构可以起到显著振动能量聚焦效果。此外,根据聚焦特性分析结果,在ABH铝型材板结构中的ABH特定区域内敷设阻尼材料,并通过仿真计算验证了其减振特性。结果表明,由ABH铝型材板结构附加阻尼材料所得的组合结构振动水平显著低于普通铝型材板结构,部分频率下振动衰减高达52.6 dB。这为轨道交通领域提供了一种很有应用潜力的结构减振降噪新思路。展开更多
Three-dimensional(3D)cell cultures have contributed to a variety of biological research fields by filling the gap between monolayers and animal models.The modern optical sectioning microscopic methods make it possible...Three-dimensional(3D)cell cultures have contributed to a variety of biological research fields by filling the gap between monolayers and animal models.The modern optical sectioning microscopic methods make it possible to probe the complexity of 3D cell cultures but are limited by the inherent opaqueness.While tissue optical clearing methods have emerged as powerful tools for investigating whole-mount tissues in 3D,they often have limitations,such as being too harsh for fragile 3D cell cultures,requiring complex handling protocols,or inducing tissue deformation with shrinkage or expansion.To address this issue,we proposed a modified optical clearing method for 3D cell cultures,called MACS-W,which is simple,highly efficient,and morphology-preserving.In our evaluation of MACS-W,we found that it exhibits excellent clearing capability in just 10 min,with minimal deformation,and helps drug evaluation on tumor spheroids.In summary,MACS-W is a fast,minimally-deformative and fluorescence compatible clearing method that has the potential to be widely used in the studies of 3D cell cultures.展开更多
文摘[目的/意义]对大数据时代国内外个人信息保护的研究热点和演化趋势进行了总结和回顾,旨在为相关领域的研究提供参考和启示。[方法/过程]运用文献计量法和科学知识图谱法,基于CNKI和Web of Science数据库,以ITGInsight为主体工具,再辅之Gephi、Excel、SATI等科学计量与知识网络分析软件,对大数据领域国内外个人信息保护研究领域的热点分布、主题演化以及研究内容进行分析。[结果/结论]大数据时代国内外个人信息保护相关研究主题分布广泛、演化规律较为复杂,呈现出显著的变化趋势,在未来的研究中,需要综合考虑技术、法律、政策等多个方面的因素,以构建更加全面、系统的个人信息保护体系。
文摘声学黑洞(Acoustic Black Hole,ABH)技术作为一种新型高效的能量聚焦以及振动控制技术,在减振降噪方面具有很好应用潜力。铝型材板结构作为一种夹层结构,具有高比刚度和高比强度等优异轻量化特性,广泛应用于列车外地板、船舶、航空航天等领域中。为了探究ABH和铝型材板结构相结合后是否还具有典型的ABH效应,运用有限元数值模拟方法研究嵌入式ABH铝型材板结构的振动能量聚焦特性。对于频点和频带聚焦特性分析结果表明,在铝型材板结构中嵌入ABH特征结构可以起到显著振动能量聚焦效果。此外,根据聚焦特性分析结果,在ABH铝型材板结构中的ABH特定区域内敷设阻尼材料,并通过仿真计算验证了其减振特性。结果表明,由ABH铝型材板结构附加阻尼材料所得的组合结构振动水平显著低于普通铝型材板结构,部分频率下振动衰减高达52.6 dB。这为轨道交通领域提供了一种很有应用潜力的结构减振降噪新思路。
基金support from the National Key Research and Development Program of China(Grant No.2017YFA0700501),and the Innovation Fund of WNLO.
文摘Three-dimensional(3D)cell cultures have contributed to a variety of biological research fields by filling the gap between monolayers and animal models.The modern optical sectioning microscopic methods make it possible to probe the complexity of 3D cell cultures but are limited by the inherent opaqueness.While tissue optical clearing methods have emerged as powerful tools for investigating whole-mount tissues in 3D,they often have limitations,such as being too harsh for fragile 3D cell cultures,requiring complex handling protocols,or inducing tissue deformation with shrinkage or expansion.To address this issue,we proposed a modified optical clearing method for 3D cell cultures,called MACS-W,which is simple,highly efficient,and morphology-preserving.In our evaluation of MACS-W,we found that it exhibits excellent clearing capability in just 10 min,with minimal deformation,and helps drug evaluation on tumor spheroids.In summary,MACS-W is a fast,minimally-deformative and fluorescence compatible clearing method that has the potential to be widely used in the studies of 3D cell cultures.
