基于LabVIEW的网络实验仪器的开发

基于LabVIEW的网络虚拟实验仪器的开发是为了解决传统实验系统数据处理能力弱和远程数据采集上的不足等问题而提出的。就LabVIEW虚拟仪器开发平台下网络实验仪器的开发方法作了介绍，对开发过程中的数据采集和网络通讯这两个关键技术作了详细阐述，并简单讨论了LabVIEW平台下数据处理编程的优越性。     

基于PCI-1710数据采集系统的研究与实现

本文介绍了一种基于研华多功能数据采集卡PCI-1710的计算机数据采集系统的设计，及其基于VB的数据采集软件开发方法。该方法能够充分发挥VB强大的数据库功能，在线创建使用者自己的测控数据库，给测控软件的开发提供了新的思路。     

一种基于HLA的通用数据采集系统框架研究

作为分布式仿真的国际标准,HLA正在军事领域的各个方面得到广泛的应用。首先对基于HLA的仿真系统基础理论进行了阐述,然后分析了基于HLA分布式仿真技术体制的仿真系统的数据采集的目的和要求,给出了数据采集的两种方案并对其优劣进行了分析和比较,最后对一种通用的数据采集系统框架进行了探索。     

基于双CPU结构的数据采集控制系统设计

提出了一种基于USB的便携式数据采集与控制系统设计方案。从USB数据采集控制器硬件及电路设计、USB固件开发、驱动程庭设计以及数据采集程序设计等方面介绍了数据采集控制系统软硬件的设计和实现。该系统采用双CPU结构,一个CPU负责进行数据的采集、滤波、计算等,另一个CPU作为总线接口实现与PC机的通讯。以此为核心设计的数据采集控制系统。具有测试精度高、可靠性好,使用方便、通用性强等优点。可用于各种场合的实时数据采集与控制。     

基于Matlab函数的数据采集系统设计与实现

信息化技术的发展,使计算机数据采集广泛应用于各个领域。极大地减轻了人员的开销,提升了生产开发效率。但传统的数据采集系统普遍存在数据采集面狭窄、数据分析逻辑性单一、相关数据采集算法兼容性差等一系列问题。根据Matlab函数的特性与传统数据采集系统存在的问题,提出一种基于Matlab函数的数据采集系统设计方案。我们采用了Matlab函数动态域值算法扩大了数据采集域,这大大提高了数据载入量;通过Matlab函数双维逻辑引擎设计,提升了算法的逻辑性。最后采用了Matlab函数动态兼容库设计,通过实时自学算法(TNZX-PRO)自动升级了数据信息并创建了兼容数据库。通过仿真实验证明:我们所提出的基于Matlab函数的数据采集系统设计,各项测试数据优异,能较好地满足数据采集要求。     

教学状态数据采集统计分析系统设计与实现

设计实现的教学状态数据采集统计分析系统分为数据采集、统计分析和数据查询三个模块。其中,数据采集和数据统计分析模块基于Excel VBA设计实现,数据查询模块基于B／S架构,以Access作为后台数据库、IIS5．0作为Web服务器,通过ASP编程开发。该系统能按照设计要求安全有效正确运行,操作简单、可扩展性好。该系统的开发使用进一步提高了本科教学状态数据的数字化、网络化管理水平,为本科教学评建工作提供了科学决策支持。     

基于智能小车的多用途数据采集系统设计

为降低野外数据采集劳动强度、提高效率,设计一种多用途无线检测系统,包含数据采集装置和上位机监控平台两部分。由四轮小车构建移动数据采集装置,并通过无线通信方式向上位机发送采样数据,借助VB工具开发上位机监控软件,通过无线传输及USB通信实时接收、显示、存储数据等。系统使用了16bit高精度A/D转换器,具有差分输入功能,采样结果准确、精度高,移动小车采样装置可以工作于远程遥控和超声波自主避障两种模式,用途广泛。     

基于LabVIEW的多物理量测量实验系统

温度和位移是物理量测量中两个重要的参数。传统的测量装置存在精度不高、体积庞大、操作不方便等缺点。为此,基于虚拟仪器设计开发了一种包括位移、温度在内的多物理量测量系统,系统以LabVIEW为软件开发平台,结合温度传感器、位移传感器、USB6008数据采集卡以及计算机搭建整个系统硬件平台,实现了数据采集、存储、分析处理和人机交互等功能。测量实验系统操作方便,测量过程直观,有助于学生了解实验原理和实现相应物理量的测量。实验结果表明,系统能够达到设计目标,具有较高的实用性。     

基于MODBUS RTU协议的数据采集及控制模拟研究

通过对Modbus RTU协议的详细分析,基于AT91SAM7X256单片机功能,开发了一种关于抽油机控制器数据采集及模拟的上位机软件。以4~20mA的模拟量作为输入,按照一定规约转换后的工程值存储在AT91SAM7X256单片机的寄存器中,基于C#实现的上位机软件通过Modbus RTU协议进行数据采集,通过组态软件实现控制模拟。     

电梯远程监控系统研究

电梯是高层建筑不可缺少的设施,怎样确保电梯高效平稳运行是当今电梯技术研究的重要课题。根据电梯远程监控设计需求,基于系统化模块化设计思想,采用常见的客户端/服务器架构,将基于Linux的嵌入式系统作为前端数据采集发送平台。详细介绍了嵌入式开发过程,提出了开发环境搭建方案,编写了数据采集处理程序;重点对基于TCP/IP通信和Socket通信协议的网络软件进行了优化设计,并对网络通信性能作了分析检测,详细介绍了数据库的搭建和界面设计。     

汉字倒说

汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

钱生钱!

我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

Inequalities for inscribed simplexes

The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

微薄的薪水,高尚的情操

现在,我们可以没有面包,没有钱,没有房子,没有车子……但我们唯独不能丢失的是高尚的情操,笃定的信念,还有,满满的希望!     

Virtual reality approach for 3D large model browsing on web site

Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching.     

An Analysis of Individualism in the Declaration of Independence

The awareness of individualism can be traced back to the period of American Revolution when the Declaration of Independence was produced.It expressed basic beliefs concerning freedom,equality,democracy,privacy and the relationship between people and government,which were exactly what the philosophy of individualism mostly dealt with at that time.This paper is to exploit the essence of individualism by analyzing the Declaration .The analysis enables us to reconsider its significance to the issue of America human rights and foreign policies.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.