Smart responsive organic microlasers with multiple emission states for high-security optical encryption

Modern high-security cryptography and optical communication call for covert bit sequences with high coding capacity and efficient authentication. Stimuli-responsive lasing emissions with easily distinguishable readout are promising in the coding field as a novel cryptographic primitive, while the application is frequently restricted by the limited number of emission states. Here, we report a strategy of achieving multiple competitive lasing signals in responsive organic microspheres where a donor–acceptor pair was introduced. The competitive lasing from the donor and acceptor was reversibly switched by modulating the competition between the radiative rate of the donor and the rate of energy transfer, and the generated multiple lasing signals enabled a quaternary coding for recognizable cryptographic implementation. Data encryption and extraction were demonstrated using a 4 × 4 microlaser array, showing vast prospects in avoiding the disclosure of security information. The results offer a comprehensive understanding of excited-state dynamics in organic composite materials, which may play a major role in high-security optical recording and information encryption.     

论高校图书馆人力资源管理

分析了高校图书馆人力资源管理的重要性和现状,提出高校图书馆人力资源管理的对策建议。     

面向情境兴趣的文本信息过滤系统

随着对信息过滤技术研究的深入和展开,信息过滤系统的推荐质量不断得到提高。但长期以来文本信息过滤系统都是用来推荐符合用户长期兴趣的信息,而忽略了用户对短期突发信息的需求。针对这种情况,本文提出了面向个人情境兴趣的文本信息过滤系统。模拟实验显示,这种过滤系统可以更好的适用用户信息需求快速变化的情况。     

GIS:文献信息可视化的新理念和工具——以竞争情报领域知识地图构建为例

在分析情报学界对文献信息可视化、知识可视化研究现状的基础上,通过分析知识的空间属性,提出了基于GIS的文献信息可视化的理念和途径,并通过构建竞争情报研究领域的知识地图,验证该方法的可行性和优越性。     

A CRISPR/Cas12a-empowered surface plasmon resonance platform for rapid and specific diagnosis of the Omicron variant of SARS-CoV-2

The outbreak of the COVID-19 pandemic was partially due to the challenge of identifying asymptomatic and presymptomatic carriers of the virus, and thus highlights a strong motivation for diagnostics with high sensitivity that can be rapidly deployed. On the other hand, several concerning SARS-CoV-2 variants, including Omicron, are required to be identified as soon as the samples are identified as ‘positive’. Unfortunately, a traditional PCR test does not allow their specific identification. Herein, for the first time, we have developed MOPCS (Methodologies of Photonic CRISPR Sensing), which combines an optical sensing technology-surface plasmon resonance (SPR) with the ‘gene scissors’ clustered regularly interspaced short palindromic repeat (CRISPR) technique to achieve both high sensitivity and specificity when it comes to measurement of viral variants. MOPCS is a low-cost, CRISPR/Cas12a-system-empowered SPR gene-detecting platform that can analyze viral RNA, without the need for amplification, within 38 min from sample input to results output, and achieve a limit of detection of 15 fM. MOPCS achieves a highly sensitive analysis of SARS-CoV-2, and mutations appear in variants B.1.617.2 (Delta), B.1.1.529 (Omicron) and BA.1 (a subtype of Omicron). This platform was also used to analyze some recently collected patient samples from a local outbreak in China, identified by the Centers for Disease Control and Prevention. This innovative CRISPR-empowered SPR platform will further contribute to the fast, sensitive and accurate detection of target nucleic acid sequences with single-base mutations.     

数据管理与数据治理的比较分析及其对制定科学数据开放共享政策的启示

[目的/意义]比较分析数据管理与数据治理差异与联系,为制定科学数据开放共享政策提供参考。[方法/过程]运用比较分析法,解析数据管理与数据治理在定义与内涵、功能、目标、原则、焦点领域5个方面的异同,由此解析其对制定我国科学数据开放共享政策的启示。[结果/结论]数据管理与数据治理在定义与内涵、功能、目标、原则、焦点领域上都有显著差异,但两者也有内在联系。数据治理是成功实施数据管理的关键。认清两者的关系有助于明晰目前我国科学数据管理政策的不足之处,为今后完善科学数据管理办法提供参考,从而规划与制定实用的科学数据开放共享细则。     

跨界搜寻与大数据能力协同作用下平台企业商业模式创新研究

[目的/意义]开放式创新背景下,平台企业所处的市场竞争越来越激烈,平台同质化严重,平台企业内部所拥有的创新资源、创新能力不足,无法有效支撑企业商业模式创新。跨界搜寻与大数据能力的协同作用能够为平台企业商业模式创新提供有力支撑。[方法/过程]对跨界搜寻、大数据能力及商业模式创新相关文献进行梳理,基于平台企业商业模式构成要素,构建跨界搜寻与大数据能力协同作用模型。[结果/结论]跨界搜寻有助于创新知识流动和创新资源获取,大数据能力可以完成资源整合及深度分析,二者的协同作用可以促进市场新知识发现,有利于平台企业商业模式创新。     

学习团队协作信息搜索的共享心智模型研究

[目的/意义]对协作信息搜索进行深入研究,为专业化协作信息搜索系统平台建设优化等提供启发和借鉴。[方法/过程]聚焦于学习团队的信息搜索行为,以高校学生为研究样本,以共享心智模型为切入点,采用扎根理论研究方法,探讨协作信息搜索中团队共享心智模型建构过程。[结果/结论]识别出四大核心环节——个体感知与探索、团队任务解析、团队信息收集和团队信息整合,并理清各环节的认知活动与共享心智模型内容要素。     

文化资本视角下的入城新生代农民工信息缺失研究

当前,新生代农民工在城市融合过程中遇到了诸多困难,信息缺失是其中的重要影响因素.本研究从文化资本的视角出发,通过对调研结果的实证分析,阐述新生代农民工的城市融合及文化资本存量现状,揭示新生代农民工文化资本的基本特征及影响因素,以期提升新生代农民工文化资本存量,增强其信息能力,加速其城市融合的步伐,助力新生代农民工真正实现市民化.     

图书馆普通员工职业胜任力研究主报告

本研究采用定性与定量相结合的方法,探索我国图书馆普通员工的职业胜任力特征.在专家访谈和关键事件行为访谈基础上,编制“图书馆员自我评价问卷”,并以此为测量工具在全国范围内实施问卷调查.根据对2799个有效样本的统计分析,建立我国图书馆普通员工职业胜任力模型和胜任力测评量表,阐释图书馆普通员工职业胜任力及其子维度的表现特征,探讨个人、教育、工作等因素对胜任力的影响,以及胜任力对工作满意度、离职倾向和组织承诺3个绩效指标的预测作用.