一种基于视频的DEW水印算法

采用差分能量水印(DEW)算法,对视频数字作品进行了数字水印的嵌入、检测和提取研究。实验结果表明,该算法计算简单、速度快、易于实现,视频信号里可编码的数据量大,可以隐藏较多的信息,并且还可以满足水印的实时嵌入和提取。     

风险企业全过程风险控制机制研究

从风险的概念和创业风险的分类出发,研究了风险企业成长过程中从种子期、起步期、成长期到成熟期等各个阶段的风险类型和特点,并在此基础上,从风险控制保障机制方面系统分析了风险控制体系的构建。     

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.     

客户价值评价体系在商业银行信息化中的应用分析

从客户价值的定义入手,提出银行客户价值评价的指标体系,并就构建客户价值体系的数据模型及其在银行信息化中的应用进行具体分析。     

基于可视化文本挖掘的本体构建

在阐述本体的概念及传统的本体创建方法不足的基础上,结合文誉挖掘的相关概念及挖掘方法,提出了一种基于可视化文本挖掘本体构建的方法。并以实例证明该方法的可行性。由挖掘信息来部分替代传统的领域专家的作用,使誉体的建立更加智能化,减少了可能由主观因素和人为失误所带来的不良后果。     

基于属性的研究生教育招生考录制度改革探究

通过研究生教育本质的探讨,有助于我们从研究生招生制度需解决问题的本原出发,了解招生选拔或考察对象的观测点,进而提出对理想的研究生招生制度的构想,不仅是一种多元的筛选制度,更应该是双向的选择制度和人才的评价制度。在选拔过程中要注重招生和培养模式的匹配,人才培养和使用的一致。同时要保障导师组在对考生创新能力和综合素质考察方面的选拔决定权。     

如何理解翻译等值

作为翻译理论的核心问题之一,翻译等值自被提出之日起其可操作性就倍受质疑,但多数人仍认为应将等值作为翻译最高标准指导翻译工作的进行。本文从翻译谚语,社交用语及文章节奏等三个侧面阐述了等值翻译的方法及重要性。     

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.     

从"七专家状告书生公司"谈数字图书馆的版权问题

通过7位专家状告书生公司的事件,阐述了数字图书馆的建设过程中保护知识产权的重要性。在发展数字图书馆的同时,必须同时兼顾著作权人、传播者和使用者之间的权利与利益,用“授权要约”的新办法解决数字图书馆与图书作者之间的版权问题。     

关于高校图书馆机构设置的探讨

文章分析了大学图书馆现有机构设置的现状和不足,提出应从文献信息的整体和图书馆功能的整体着眼,规划全新的高校图书馆组织机构,并对其特点进行了具体的说明。