InSAR validation based on GNSS measurements in Bucharest

This research aims to complex validate radar displacement products over Bucharest based on Global Navigation Satellite System or GNSS. Validation was represented by the comparison of the recent TerraSAR-X (TSX) displacement results with field GNSS data. For this purpose, 24 and 27 high-resolution images acquired from the TSX satellite between 2011 and 2014 were processed by Permanent Scatterer Inteferometry (PSI) and Small BASeline Subset (SBAS) – interferometric techniques using synthetic aperture radar (SAR) images. The images were selected from a larger pool of SAR images, after consulting weather databases, which helped eliminate the images acquired under adverse weather conditions. GNSS locations were cross-checked on high-resolution optical images and 21 ground points (including three permanent stations) were selected. All these points were (1) characterized by high coherence on radar images; (2) were on the ground; (3) were situated in large vacant spaces; and (4) far away from radar obstacles such as trees. A major challenge in achieving the research goal was to overcome the lack of permanent stations at the ground level within the area of Bucharest. Instead of permanent stations, our team designed and installed forced centring systems that remained stable over time, eliminating the instalment errors of GNSS receivers. The line-of-site (LOS) components derived from GNSS data have been compared with those of the SAR scatterers closest to the GNSS markers (never coinciding). For each location, the vertical reading was projected in the LOS of the SAR sensor. These readings were compared with the displacement values determined at the locations of permanent scatterers (PSs) within 100 m from the GNSS nodes, by eliminating all scatterers on buildings. The comparison has shown a good agreement.     

新型护理临床路径软件的设计与应用

传统护理临床路径系统可以按病种制定出合理化诊疗护理常规流程,使诊疗护理按流程进行有效控制.但路径流程不是结构化,无法与医嘱和护理收费互联互通.而且很多疾病随着治疗进展不断在发生着变化,特别是在诊疗过程中经常会发现有其他并发症.传统的护理路径系统就无法指导护理人员按流程进行护理工作.新型护理路径软件可以将每个路径中每项护理结构化,根据路径节点直接产生收费,并能根据患者病情变化,实时建立合并其他并发症的护理流程.最终依据病情建立最佳的治疗护理方案,降低医患双方的成本,提高诊疗护理效果.     

抵抗SPA攻击的分段Montgomery标量乘算法

基于Akishita在Montgomery形式椭圆曲线上计算双标量乘kP+lQ的思想,提出了一种计算三标量乘kP+lQ+tR的新算法,使运算量减少了约23%。在上述算法基础上提出一种椭圆曲线上分段计算标量乘bP的方法,通过预计算少量点,将计算bP转化为计算kP+lQ或kP+lQ+tR,并使用边信道原子化的方法使其可以抵抗简单能量分析(SPA)攻击。最后使用Magma在二进制域上对分段算法仿真,结果显示二分段算法计算速度最快,三分段算法其次,在效率上均比原始Montgomery算法提升很大。     

样本值统计图的ActiveX实现

介绍了ＡｃｔｉｖｅＸ控件设计的方法,并使用ＶｉｓｕａｌＣ＋＋６．０的ＭＦＣ（Ｍｉｃｒｏｓｏｆｔ Ｆｏｕｎｄａｔｉｏｎ Ｃｌａｓｓ）实现一个样本值统计图的ＡｃｔｉｖｅＸ控件。     

地区级烟草公司管理信息系统的规划与建设

介绍了地区级烟草分公司管理信息系统的设计思想,规划原则和实现的方法。     

Visual Foxpro中防止关联数据库的不彻底数据更新

提出如何利用 TTS技术防止关联数据库关联更新的不彻底 ,并以一个实例对其实现过程进行了具体的说明。     

中国古代饕餮纹饰的历史文化表征

饕餮纹作为中国古代青铜器的重要纹样,不仅具有独特的美学特征,更有深刻的历史文化含义,它承载着商代社会文化观念、宗教礼制,更承载着商人的精神风貌和价值观念,展示了远古历史前进的力量和命运的艺术,成为现代人类崇仰的审美对象。     

NS网络仿真技术及其应用分析

仿真技术在现代通信网络设计中的作用越来越大,本文首先分析了NS网络仿真器的体系结构,对其主要组成部分进行了说明,然后介绍了如何在NS环境下开发用户自己的仿真对象,及在此基础上开发的ATM仿真器的结构。     

一种基于群体智能的多主体聚类算法*

目前聚类算法普遍存在对初始化参数和异常数据敏感,难以找到最优聚类以及聚类的有效性等问题.利用群体智能和多主体系统具有的自组织性、健壮性、可扩展性和简单性等优点,给出了一种新型的优化聚类算法.在三维空间搭建主体运行环境,丰富主体的记忆、通信以及信息协调能力,增强主体的分析和判断能力.实验证明,该新型聚类算法具有运行速度快,准确性高以及对数据的输入顺序不敏感,能应付异常数据,处理高维、高复杂性数据等优点,可应用于图像处理、模式识别、文档归类等多个领域.     

基于Direct3D的 HLSL高层着色语言实现图形着色效果*

高层着色语言（HighLevel Shader Language,HLSL）是DirectX 9.0最强有力的新组件之一。HLSL将程序员从复杂的Shader指令集中解放出来,着力于更重要的算法而不用再去理会一些硬件细节,从而创建出更多的极具震撼力的渲染效果。论述了HLSL语言基础及编译,并给出了一个实现凹凸映射效果的实例。