Supramolecular chemistry

The article discusses molecular recognition and overviews the key concepts -storage and retrieval of chemical information by molecular structures, supramolecular reagents and catalysts, molecular transport, semiochemistry and self assembly. The prospects of controlling supramolecular architecture through engineered molecular recognition and design of ‘programmed systems’ controlled by molecular information are also discussed.     

Objective Information Theory Exemplified in Air Traffic Control System

Information is the core of Air traffic con-trol system (ATCS).In this paper,objective information theory is extended to depict,model and measure the information exemplified in ATCS.The sextuple model is presented with information ontology,state occurrence time,state set,carrier,reflection time,and reflection set.The metric system is given to quantitively measure the information with extensity,detailedness,continuity,richness,containability,delay,pervasiveness,authenticity,and adaptability.The results show that the proposed method is potential to find out actual indexes in ATCS for flight safety.     

实时股市行情播出系统改版及实施方案

应用多媒体资讯电视（CBNC—INFOTV）制播系统,将原有的实时股市行情播出系统进行改版,改版后的播出系统在同一播出屏幕上划分区域更合理,内容更丰富,目的是将单位时间内所创造的广告价值最大化,并通过系统流程图、连线图等方式列举了搭建播出平台的实施方案。     

区域电网调度系统中维护信息对称性特征识别

为提升对区域电网调度系统维护信息对称性特征的识别效率及准确率,文中首先通过小波变换方法提取区域电网调度系统中维护信息的特征,然后运用模糊C均值算法分析特征数据的分布情况,并以此为基础,获取维护信息对称性故障特征的波形,根据Ucosθ波形特征识别结果,实现对区域电网调度系统中维护信息对称性特征的识别.实验结果表明:在不同...     

Simultaneous wireless information and power transfer with fixed and adaptive modulation

Activating Wireless Power Transfer (WPT) in Radio-Frequency (RF) to provide on-demand energy supply to widely deployed Internet of Everything devices is a key to the next-generation energy self-sustainable 6G network. However, Simultaneous Wireless Information and Power Transfer (SWIPT) in the same RF bands is challenging. The majority of previous studies compared SWIPT performance to Gaussian signaling with an infinite alphabet, which is impossible to implement in any realistic communication system. In contrast, we study the SWIPT system in a well-known Nakagami-m wireless fading channel using practical modulation techniques with finite alphabet. The attainable rate-energy-reliability tradeoff and the corresponding rationale are revealed for fixed modulation schemes. Furthermore, an adaptive modulation-based transceiver is provided for further expanding the attainable rate-energy-reliability region based on various SWIPT performances of different modulation schemes. The modulation switching thresholds and transmit power allocation at the SWIPT transmitter and the power splitting ratios at the SWIPT receiver are jointly optimized to maximize the attainable spectrum efficiency of wireless information transfer while satisfying the WPT requirement and the instantaneous and average BER constraints. Numerical results demonstrate the SWIPT performance of various fixed modulation schemes in different fading conditions. The advantage of the adaptive modulation-based SWIPT transceiver is validated.     

基于颜色信息的视频检索系统的实现

针对某电视台在转播节目时需要自动切换图像内容的要求，设计并实现了一套视频检索系统。这套系统充分利用彩色图像的颜色信息和颜色直方图的唯一性，通过计算两帧图像之间简化的直方图距离来判断它们是否相似。从实验结果看，这套系统能够快速，准确地从序列中检索出“感兴趣”的图像，并且自动切换成自己的视频内容，在“感兴趣”序列结束时也能快速地给出相应判断，整个系统基本满足应用的要求。     

基于汉语分词的信息抽取技术

随着信息时代的到来，如何将大量无序的信息及时准确地提取、整理、组织成便于查询检索的形式，巳成为研究开发的焦点。尤其是随着互联网技术的高速发展，为用户提供了更加丰富的信息。将基于汉语自动分词的综合信息抽取技术应用于信息检索，具有实际应用意义和价值。     

互联网图像隐写检测方法研究

图像隐写检测算法是目前信息隐藏领域的研究热点之一。分析了几种可针对互联网上大量图像数据的计数统计特征类隐写检测方法,其中包括本文提出的一种新型快速、高效的统计检测方法-TAP检测法。     

基于卓越计划的师范院校电子信息人才培养

本文针对师范院校电子信息专业学生的特点,在卓越计划专业建设内涵的基础上,初步分析了师范院校电子信息专业人才培养存在的问题,给出了重庆师范大学电子信息专业卓越工程师培养的几条具体措施,并对师范院校电子信息专业卓越计划的开展提出了两点思考。     

NEAX61E交换机软件故障数据的收集与分析

分析了NEAX61E程控交换机软件故障的分类及PHASE信息的含义,通过实例介绍了在软件发生故障后有关数据收集与分析的方法。