多项式根的定位与估计

将多项式的根的估计与定位和矩阵特征值的估计与定位联系起来,讨论数论命题中几类特殊的多项式特征根的估计方法,得到一般多项式的特征根的估计方法。     

基于加权极速学习机室内高动态环境的定位算法

随着人们对室内基于位置服务的需求越来越大,室内定位的研究变得越来越重要.Wi-Fi由于其传输距离适中,在智慧城市发展的推动下,热点的覆盖也非常多.因此基于Wi-Fi的定位技术成为众多室内定位技术中最具有可行性的.面对室内无线环境高动态变化的情况,提出了基于加权极速学习机(W-ELM)的定位方法,实验证明该方法能够有效提高定位精度.     

论分时度假在中国“本土化”的发展

文章主要阐述了分时度假的含义、起源，并结合中国的国情，分析分时度假在中国“本土化”的发展历程及其发展特色。     

Cooperative localization against GPS signal loss in multiple UAVs flight

Based on multiple unmanned aerial vehicles(UAVs) flight at a constant altitude,a fault-tolerant cooperative localization algorithm against global positioning system(GPS) signal loss due to GPS receiver malfunction is proposed.Contrast to the traditional means with single UAV,the proposed method is based on the use of inter-UAV relative range measurements against GPS signal loss and more suitable for the small-size and low-cost UAV applications.Firstly,for re-localizing an UAV with a malfunction in its GPS receiver,an algorithm which makes use of any other three healthy UAVs in the cooperative flight as the reference points for re-localization is proposed.Secondly,by using the relative ranges from the faulty UAV to the other three UAVs,its horizontal location can be determined after the GPS signal is lost.In order to improve an accuracy of the localization,a Kalman filter is further exploited to provide the estimated location of the UAV with the GPS signal loss.The Kalman filter calculates the variance of observations in terms of horizontal dilution of positioning(HDOP) automatically.Then,during each discrete computing time step,the best reference points are selected adaptively by minimizing the HDOP.Finally,two simulation examples in Matlab/Simulink environment with five UAVs in cooperative flight are shown to evaluate the effectiveness of the proposed method.     

浅议房地产开发与居民居住的关系

文章主要谈到了房地产与居民居住的关系,首先阐述了房地产公司的行业特性,正是它的行业特性决定了它与改善居民居住环境的关系,同时居民居住需求也反作用于房地产公司的定位。     

土体应变局部化判别准则与峰值后的力学性状

针对土体应变局部化的理论研究现状 ,从土体局部化产生的判别准则及其峰值后土体力学性状的数值模拟两方面入手 ,探讨传统应变局部化理论目前尚存在的问题 .研究表明 ,轴对称条件下的土体失稳现象是一种扩散性的分叉特性 ,变形局部化理论难以解释其产生的机理 ;变形分叉的非共轴理论能够改善传统变形分叉理论的局限性 ;Pietruszczak等和笔者给出的复合体理论可有效地模拟土体峰值后的力学性状 .     

弦振子振动分析(Ⅲ)--双质点系统

利用拉格朗日方程建立了双质点弦振子振动方程，对其振动进行了分析；利用级数展开，得到了双质点弦振子的级数解，研究了双质点弦振子的模态局部化现象，找到了产生模态局部化的“阈值”，利用MAPLE9.0计算机绘图，作出了级数解和振幅比随参数变化曲线，所得结论为振幅比与参数β无关，振幅比和级数解随参数β的增加而增加；级数解随参数β增加而减小，双质点弦振子有模态局部化现象。     

高校电化教育定位与教育技术发展

电化教育是多学科、多专业交叉的事业,因而全局观念显得尤为重要.本文提出电化教育中心在高校中的准确定位这一观点,就是从全局着眼把从事电化教育工作的人员分为两部分,各负其责,从而推进这项事业与时俱进,不断创新、全面发展.     

Prokaryotic expression, localization and function of the infectious laryngotracheitis virus glycoprotein G

The infectious laryngotracheitis virus （ILTV） glycoprotein G （gG） gene of E3 and Zhonghai strains was cloned, sequenced and compared with the gG gene of other Type Ⅰ animal herpesviruses. To find the localization and the function of the gG in the infected cells, the 35 kD fusion protein （His-GG） was expressed by inserting the coding region of gG except for the signal peptide into pET30a （＋）. After purification of the His-GG fusion protein, the rats＇ antibody to the His-GG was prepared and purified by using the protein G Sepbarose. Results of laser scanning confocal microscopy （LSCM） detection showed that the ILTV gG was in the perinuclear region and membrane of chicken embryo liver （CEL） and kidney （CEK） cells, and that the gG accumulated more in the coalescent part than in the other parts of the adjacent CEL or CEK cells. The plaque size and the one-step growth curve tests suggested that the ILTV gG was required for viral growth by cell-to-cell direct infection in tissue-cultured CEL cells.     

基于SOBER故障定位模型的关联谓词赋值偏好改进方法

针对基于统计理论的故障定位模型SOBER,研究软件故障的自动定位技术.通过程序研究及大量实例分析,探明SOBER模型的局限性——因为谓词关联性问题而导致故障定位准确度不高,并提出一种新的关联谓词赋值偏好方法,并进行了实证研究.实验结果表明,该方法较好地解决了谓词干扰问题,从而提高了基于SOBER模型的故障定位准确率.