EI Village 2检索系统中RSS推送服务及其操作方法

本文介绍了目前流行于网络的信息推送技术RSS及RSS阅读器,同时以EI Village 2检索系统为例,介绍了RSS的订制及阅读方法.     

构建基于J2EE规范的数字图书馆模型的探讨

从软件工程的角度分析,数字图书馆实质是一个分布式管理信息系统。构建数字图书馆,就是构建一个分布式管理信息系统。J2EE的多层次的分布式应用模型和一系列开发技术规范,为构建数字图书馆平台提供了可靠保证。图1。参考文献11。     

Technological research in the EU is less efficient than the world average. EU research policy risks Europeans’ future

We have studied the efficiency of research in the EU by a percentile-based citation approach that analyzes the distribution of country papers among the world papers. Going up in the citation scale, the frequency of papers from efficient countries increases while the frequency from inefficient countries decreases. In the percentile-based approach, this trend, which is uniform at any citation level, is measured by the e_p index that equals the P_{top 1%}/P_{top 10%} ratio. By using the e_p index we demonstrate that EU research on fast-evolving technological topics is less efficient than the world average and that the EU is far from being able to compete with the most advanced countries. The e_p index also shows that the USA is well ahead of the EU in both fast- and slow-evolving technologies, which suggests that the advantage of the USA over the EU in innovation is due to low research efficiency in the EU. In accord with some previous studies, our results show that the European Commission’s ongoing claims about the excellence of EU research are based on a wrong diagnosis. The EU must focus its research policy on the improvement of its inefficient research. Otherwise, the future of Europeans is at risk.     

模拟智能BIT测试微处理机系统板

机内测试技术(Built-inTest,简称BIT)是一种能显著改善装备或系统测试性与诊断能力的重要技术手段。智能机内测试模拟系统是运用智能BIT技术的理论,开发出的一个对硬件设备在线测试的模拟系统。它是在Windows操作系统下,利用嵌入式C语言开发出来的,嵌入式C语言现广泛应用于各种硬件测试及开发环境中。智能机内测试模拟系统在对智能的模拟方面运用数组、随机函数等方法来实现,从而体现出智能机内测试的特点。本文描述了系统中对微处理机系统板部分的测试过程。     

软件高职C语言程序设计教学方法探索

本文在分析软件高职C语言程序设计课程教学现状和存在问题的基础上,综合考虑该课程教学目标、教学内容特点、学生实际情况、教师自身素质和教学环境条件,选择适当的教学方法并进行组合运用,有助于增强教学的趣味性,激励学生积极主动地学习,加强实践技能训练,提高课程的教学效果。     

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.     

成果导向的学校体育质量监测结构及运行机制研究——芬兰经验与启示

成果导向是芬兰学校体育质量监测依据的主要理念。芬兰学校体育质量监测机构与政府没有隶属关系,监测人员可分为报告质量、体育课程质量、体育教师质量、体育教学质量、体育设施质量6种监测类型;监测人员经过严格的选聘程序、分类化的专业培训之后,可以根据成果导向的学生体育学习监测框架,从省级、县级、区级3个不同层面开展监测工作,监测程序由政府进行认证与规范。成果导向的芬兰学校体育质量监测结构由早期、中期、后期、执法、突击与合并6种监测类型及其相应的指标和内容构成,各类型之间环环相扣、相互补充。通过借鉴芬兰经验,突出成果导向,有利于提升学校体育质量,强化我国学校体育督导的目标性与规范性,有助于优化与改善我国学校体育质量的现有督导结构及运行机制,使其更加关注学校体育成果细化和转化的导向,促使督导评估指标朝向可测化和具体化方向发展,进而更好地发挥督导成果在助力学校体育发展方面的各类功能。     

Mosaic Recombination Inflicted Various SARS-CoV-2 Lineages to Emerge into Novel Virus Variants: a Review Update

Human Coronaviruses (hCoVs) belongs to the enormous and dissimilar family of positive-sense, non-segmented, single-stranded RNA viruses. The RNA viruses are prone to high rates of mutational recombination resulting in emergence of evolutionary variant to alter various features including transmissibility and severity. The evolutionary changes affect the immune escape and reduce effectiveness of diagnostic and therapeutic measures by becoming undetectable by the currently available diagnostics and refractory to therapeutics and vaccines. Whole genome sequencing studies from various countries have adequately reported mosaic recombination between different lineage strain of SARS-CoV-2 whereby RNA dependent RNA polymerase (RdRp) gene reconnects with a homologous RNA strand at diverse position. This all lead to evolutionary emergence of new variant/ lineage as evident with the emergence of XBB in India at the time of writing this review. The continuous periodical genomic surveillance is utmost required for understanding the various lineages involved in recombination to emerge into hybrid variant. This may further help in assessing virus transmission dynamics, virulence and severity factor to help health authorities take appropriate timely action for prevention and control of any future COVID-19 outbreak.