亭台楼阁类建筑的文学价值

亭台楼阁作为中国古代的传统建筑,其特殊的体式、功能及其与自然环境所构成的独特意境,成为历代文人登高临远的重要场所,形成了大量诗文,这些作品往往寄寓了游子怀乡、壮士悲歌、文士不遇等情感,许多名篇对后人产生了强大的精神感召力,成为中华民族精神文化遗产的一部分。     

ZnO薄膜的研究进展

光泵浦紫外激光的获得使ＺｎＯ成为热门的新型光电材料,文章从ＺｎＯ的基本特性、光电特性、生长方法,用途和应用前景等方面综述了ＺｎＯ的最新研究及进展,并对ＺｎＯ今后的发展作了展望。     

Insights into the Reaction Network and Mechanism of Green Aerobic Oxidative Esterification of Methacrolein over Different Heterogeneous Catalysts

The oxidative esterification of methacrolein (MAL) is an important way to prepare high-valued methyl methacrylate (MMA), but this process is ultra-complex due t...     

Optical coherent dot-product chip for sophisticated deep learning regression

Optical implementations of neural networks (ONNs) herald the next-generation high-speed and energy-efficient deep learning computing by harnessing the technical...     

Hydrogen Bond-Assisted Ultra-Stable and Fast Aqueous NH4+ Storage

Aqueous ammo-nium ion batteries are regarded as eco-friendly and sustainable energy storage systems.And appli-cable host for NH4+ in aqueous solution is always ...     

多服务器环境下基于扩展混沌映射的认证密钥协商协议

传统的单服务器环境下基于智能卡认证方案,单个服务器对所有的注册远程用户提供服务。如果用户想要从不同的服务器获得网络服务,则必须分别在不同的服务器注册。为解决以上问题,研究者提出了多服务器认证方案。然而,文献中的大部分方案都不能实现强安全特性。受到切比雪夫映射的半群特性和基于扩展混沌映射的密钥协商协议启发,本文提出一种多服务器环境中的认证方案。新方案不需要使用验证表并且允许用户访问不同的服务器而不需要分别注册。新方案不仅可以抵抗各类攻击,还实现了用户的强匿名性。和以前的相关协议相比,新协议具有高效性和安全性,因而适合在实际环境中应用。     

输变电系统可靠性工作的试点及研究

介绍了现实施的输变电设施可靠性评价规程与即将实施的输变电系统可靠性评价体系的联系和区别,并以本次乐山电业局试点工作为基础,探讨新评价规程在实际生产工作中的应用。     

知识管理与知识传播——论图书馆学与传播学的融合

在图书馆用户导向的服务理念下,知识管理与知识传播将会是图书馆发展的两项重要工作,吸收和借鉴传播学的理论和实践是图书馆做好知识传播工作的关键。从图书馆学与传播学共同面对的知识和信息入手,阐述了图书馆和传播学的历史渊源、理论和实践的融合。     

A Soft Resistive Acoustic Sensor Based on Suspended Standing Nanowire Membranes with Point Crack Design

An artificial basilar membrane (ABM) is an acoustic transducer that mimics the mechanical frequency selectivity of the real basilar membrane, which has the potential to revolutionize current cochlear implant technology. While such ABMs can be potentially realized using piezoelectric, triboelectric, and capacitive transduction methods, it remains notoriously difficult to achieve resistive ABM due to the poor frequency discrimination of resistive‐type materials. Here, a point crack technology on noncracking vertically aligned gold nanowire (V‐AuNW) films is reported, which allows for designing soft acoustic sensors with electric signals in good agreement with vibrometer output—a capability not achieved with corresponding bulk cracking system. The strategy can lead to soft microphones for music recognition comparable to the conventional microphone. Moreover, a soft resistive ABM is demonstrated by integrating eight nanowire‐based sensor strips on a soft trapezoid frame. The wearable ABM exhibits high‐frequency selectivity in the range of 319–1951 Hz and high sensitivity of 0.48–4.26 Pa^?1. The simple yet efficient fabrication in conjunction with programmable crack design indicates the promise of the methodology for a wide range of applications in future wearable voice recognition devices, cochlea implants, and human–machine interfaces.     

会议电视系统混网设计中的问题及解决方案

从原理上对H.320系统和H．323系统的混合组网设计中的问题作了深层次的探讨,并提出了针对混合网中的问题和基于网络优化的一些解决思路。