Multistimuli‐Responsive Display Materials to Encrypt Differentiated Information in Bright and Dark Fields

Visually readable codes play a crucial role in anticounterfeiting measures. However, current coding approaches do not enable time‐dependent codes to be visually read, adjusted, and differentiated in bright and dark fields. Here, using a combined strategy of piezoelectric lattice selection, oxygen vacancy engineering, and activator doping, a lanthanide ion‐doped titanate is developed that integrates mechano‐, thermo‐, and photo‐responsive color change (>18 h for bright field), persistent luminescence (>6 h for dark field), and stimulus‐triggered multimodal luminescence. The feasibility of optical encoding, visual displaying, and stimulus‐responsive encrypting of time‐dependent, dual‐field information by using the developed material is demonstrated. In particular, the differentiated display of dual‐field modes is achieved by combining mechanostimulated abolition of only the persistent luminescence and thermo‐ and photostimulated reversal of both the color change and persistent luminescence. The results provide new insights for designing advanced materials and encryption technologies for photonic displays, information security, and intelligent anticounterfeiting.     

基于Linux的入侵防御系统的研究与实现

首先分析了在Linux操作系统下入侵防御系统的三种体系结构,然后给出了一种建立入侵防御系统的具体实现,最后讨论了进一步需要研究的问题.     

基于ASP模式的汽车行业公共服务平台的研究

介绍基于ASP模式的汽车行业公共服务平台的结构及其现实意义,并探讨平台两种关键技术,即授权机制和基于XML的数据集成.     

教育体验型文物建筑保护的可拓设计方法

研究了教育体验型文物建筑的保护设计中突出教育个性、保护教育形态和表达教育意蕴的可拓设计方法,对文物建筑保护设计具有本体论和方法论意义层面上的启示和借鉴作用,使文物建筑及其环境能更好地满足体验需求。     

A Comprehensive Identification and Function Analysis of Serine/Arginine-Rich (SR) Proteins in Cotton (Gossypium spp.)

As one of the most important factors in alternative splicing (AS) events, serine/arginine-rich (SR) proteins not only participate in the growth and development of plants but also play pivotal roles in abiotic stresses. However, the research about SR proteins in cotton is still lacking. In this study, we performed an extensive comparative analysis of SR proteins and determined their phylogeny in the plant lineage. A total of 169 SR family members were identified from four Gossypium species, and these genes could be divided into eight distinct subfamilies. The domain, motif distribution and gene structure of cotton SR proteins are conserved within each subfamily. The expansion of SR genes is mainly contributed by WGD and allopolyploidization events in cotton. The selection pressure analysis showed that all the paralogous gene pairs were under purifying selection pressure. Many cis-elements responding to abiotic stress and phytohormones were identified in the upstream sequences of the GhSR genes. Expression profiling suggested that some GhSR genes may involve in the pathways of plant resistance to abiotic stresses. The WGCNA analysis showed that GhSCL-8 co-expressed with many abiotic responding related genes in a salt-responding network. The Y2H assays showed that GhSCL-8 could interact with GhSRs in other subfamilies. The subcellular location analysis showed that GhSCL-8 is expressed in the nucleus. The further VIGS assays showed that the silencing of GhSCL-8 could decrease salt tolerance in cotton. These results expand our knowledge of the evolution of the SR gene family in plants, and they will also contribute to the elucidation of the biological functions of SR genes in the future.     

Strengthening and toughening mechanism of a Cu-bearing high-strength low-alloy steel with refined tempered martensite/bainite (M/B) matrix and minor inter-critical ferrite

The microstructure–mechanical property relationship of a Cu-bearing low-carbon high-strength low-alloy steel, subjected to a novel multistage heat treatment inc...     

基于UCOSⅡ的恒温槽自动检测仪设计实现

基于STM32F103开发平台进行实时嵌入式操作系统μc-OS Ⅱ的移植,并使之实现恒温槽不同位置温度采集、LCD显示、打印等的多任务处理。系统通过基于双通道24位高精度模数转换芯片AD7793的传感装置对温度数据进行采集,传感器位置根据系统对步进电机的控制而改变。系统可以采集恒温槽数据,同时在LCD上显示采集数据,进行数据计算处理并得到恒温槽的性能指数,且可通过打印机输出所有测量和计算的结果。     

Flash memory based computing-in-memory system to solve partial differential equations

Dear editor, Many emerging non-volatile memories (NVM),such as re-sistive random access memory (RRAM)[1],phase-change memory (PCM)[2],and ferroelectric RAM (FeR...     

申威处理器硬件数据预取技术的实现

硬件数据预取技术可以有效提升处理器的访存性能,是申威处理器性能优化过程中亟需突破的一项技术。硬件开销和处理器架构的制约是硬件预取技术实现中的主要难点。借鉴学术界对硬件预取技术的研究成果和工业界的应用现状,紧密结合申威处理器的结构特点,研究了申威处理器硬件预取技术的实现方法。以流预取为例,在处理器核心面积增加0.97%的情况下,硬件预取技术的应用可以将目前申威处理器的整数性能平均提升5.17%,最高提升28.88%;浮点性能平均提升6.39%,最高提升30.11%。