基于MIMO-OFDM系统的盲源分离算法研究

为了实现使用OFDM调制的MIMO系统的盲源分离问题,提出了在接收端使用Nyquist频率对接收到的信号进行采样的,从而将原始的MIMO-OFDM系统盲源分离问题转变为N组的独立分量分离的问题.通过将FastICA算法扩展到复数域,在频域中对每一组相同子载波上的信号进行独立分量分析,最终实现信号的盲分离.仿真实验获得的结果证实了该方案具有良好的恢复效果,且算法收敛的迭代次数只需要8～10次.     

高职院校教务管理系统的设计

本文以职业技术学院教务管理系统为研究对象,依据多年从事教务管理开发经验,以对目前教务管理信息系统分析？比较为基础,以教育的职业性？实践性和开放性为原则,提出了适合职业院校教务管理系统的总体设计思路,以适应职业院校的教学管理特点、为培养高素质技术技能型人才提供保障。     

基于移动终端的EPC识读煤矿安全系统的设计与实现

针对煤矿安全生产的信息化管理问题,本文提出了一种基于移动终端的EPC识读系统,它是基于广泛应用的移动终端上所开发的一种系统,可实现在移动终端上进行人员查询、统计、考勤和定位等管理功能。     

虚拟系统使用经验中的创新发明

根据多年使用各类虚拟系统的经验,通过对不同品牌摄像机、云台、传感跟踪装置等虚拟系统配套设备的研究,自主研发了通过摄像机光缆传输虚拟系统传感跟踪数据的设备,创新集成化虚拟系统的数据传输,简化了虚拟系统搭建流程,提高了系统稳定性.     

广播电台小型媒体资产管理系统的搭建实践

【】在这高速发展的信息时代,媒体资产管理系统已在广电系统广泛应用,本文简要介绍我台小型媒体资产管理系统的搭建实践。     

多媒体计算机体育信息处理系统的设计

在计算机网络技术不断发展与完善的新时期,我国各个领域都相继进入了现代化、信息化的时代,多媒体信息处理系统是依托于各种计算机应用以及网络技术的综合性平台,在我国很多领域都得到了广泛应用,尤其是在信息量不断增加的现代体育事业中,多媒体计算机信息处理系统在信息储存、分享以及处理方面,更是发挥着不可替代的作用。从体育信息本身的特点出发,其除了文字以及数据、图片信息之外,还包括有声信息以及动态影响信息等,视频、光盘等都记载体育信息的主要载体,因此,建立具有特色的体育信息多媒体处理系统,是现阶段体育事业发展的需要,同时也是提高信息处理效率与质量的基础。     

基于μC/OS-II生物脱氮工艺中多参数实时检测

为实现对生物脱氮工艺中多参数的实时检测,以及解决常规化学检测过程中带来的污染和耗时问题。应用了一种基于电化学和嵌入式系统,可同时对水温、pH值、氨氮3个相关参数进行实时检测,并对理论值和实测值进行数据分析对比。实验结果表明,该系统实时性良好、稳定可靠,且满足了该工艺实时检测要求。     

产品质量检测损耗的处理原则及应用

结合移动公司内部相关制度,对质量检测过程中产生的损耗进行了流程设计,提出了改造ERP系统,在ERP系统中增加损耗检测出库项目,同时进一步提出对损耗物资进行修复的理念,并明确了损耗产品的修复处理流程,最大限度地减少检测损耗对公司带来的损失,同时完善了相关规章制度,为质量检测工作提供了制度依据。     

Automated,high performance,flow-through chemiluminescence microarray for the multiplexed detection of phycotoxins

A novel multiplexed immunoassay for the analysis of phycotoxins in shellfish samples has been developed. Therefore, a regenerable chemiluminescence (CL) microarray was established which is able to analyze automatically three different phycotoxins (domoic acid (DA), okadaic acid (OA) and saxitoxin (STX)) in parallel on the analysis platform MCR3. As a test format an indirect competitive immunoassay format was applied. These phycotoxins were directly immobilized on an epoxy-activated PEG chip surface. The parallel analysis was enabled by the simultaneous addition of all analytes and specific antibodies on one microarray chip. After the competitive reaction, the CL signal was recorded by a CCD camera. Due to the ability to regenerate the toxin microarray, internal calibrations of phycotoxins in parallel were performed using the same microarray chip, which was suitable for 25 consecutive measurements. For the three target phycotoxins multi-analyte calibration curves were generated. In extracted shellfish matrix, the determined LODs for DA, OA and STX with values of 0.5 ± 0.3 μg L⁻¹, 1.0 ± 0.6 μg L⁻¹, and 0.4 ± 0.2 μg L⁻¹ were slightly lower than in PBS buffer. For determination of toxin recoveries, the observed signal loss in the regeneration was corrected. After applying mathematical corrections spiked shellfish samples were quantified with recoveries for DA, OA, and STX of 86.2%, 102.5%, and 61.6%, respectively, in 20 min. This is the first demonstration of an antibody based phycotoxin microarray.     

Computational study of tautomerism and aromaticity in mono‐ and dithio‐substituted tropolone

Keto‐enol tautomerism in mono‐ and dithio‐substituted analogs of tropolone was investigated using electronic structure computations. Seven structural isomers of C₇H₆OS and four of C₇H₆S₂ were optimized fully in gas phase at HF and B3LYP theoretical levels in combination with the 6‐311++g** basis set, as well as with the CBS‐QB3 and G3 methods. To examine the effects of an aqueous solvent on tautomeric equilibrium constants, each species was optimized in water using the self‐consistent reaction field polarizable continuum model at HF/6‐311++g** and B3LYP/6‐311++g** model chemistries. In both phases it was found that the enol forms were significantly more stable with respect to electronic energy and Gibbs free energy compared to the keto isomers, and outnumbered the keto species by several orders of magnitude. This was understood on the basis of elementary Hückel theory and the 4n + 2 rule, and supported by nucleus independent chemical shifts computations of NMR chemical shifts in these seven membered cyclic systems. © 2012 Wiley Periodicals, Inc.