Test and estimate the score have their nature relationship , we could get to know how does the examinee master the knowledge by the result score . the test questions must be standardlized when you make a test by using a computer so that we could make full use of its fast speed and accuracy 考试和判分是一对孪生兄弟,根据判分结果可以了解被测试者对某一方面知识的掌握程度。计算机考试要求试题要尽量标准化,以便充分利用计算机的运算速度和精确性。
A new experimental and training system with modular hardware and software is introduced in this paper based on the research and analysis of the principle , structure and realizing method of microprocessor relay protection and safety automation equipment and the constitutes of cut - up arrangement substation integrated automation at home and abroad whose function includes relay protection experiment , such as current protection , distance protection and so on , and substation integrated automation experiment etc . the structure and function of the experimental and training system are introduced in detail , the principle and function of the hardware section are analyzed , and the method of software designing and programming is concisely set forward . in this paper , a new communication mode between computer and the rs - 485 bus and the can bus by using the computer ' s epp port and an effective method of software ' s remote downloading are brought forward 论文在研究和分析了国内外微机保护和安全自动装置的原理、结构和实现方法以及分散分布式变电站综合自动化系统构成的基础上,开发了一种硬件和软件模块化,能实现电流保护、距离保护、故障录波等多种继电保护和安全自动装置功能以及变电站综合自动化功能的实验培训系统,详细介绍了整个实验培训系统的结构和功能,分析了硬件部分的原理和作用,还简要阐述了整个软件编制的大体方法,并提出了一种利用计算机的epp口实现上位机与rs - 485总线和can总线通信的新型通信方式,提出了一种利用psd913f2的双flash的特点进行软件的远程在线下载的方法。
The virtual instrument is the soft instrument , which instead of corresponding electronic circuitry using special software , makes full use of computer hardware resource to accomplish part or entire function of traditional instruments and makes the software as kernel , which has the function of control , processing and analysis . the vi is the modularization and softwarization 虚拟仪器是以具备控制、处理分析能力的软件取代相应功能的电子线路,充分利用计算机的软硬件资源,用计算机完成传统仪器的部分乃至全部功能的软仪器;是传统仪器功能与外形的模块化和软件化。
Virtual instrument , which is the offspring of the computer technology and the test technology , makes full use of the resources of software and hardware of pc . it is a kind of novel intelligentized instrument systems substituting traditional instruments . it consists of hardware modules and software modules 虚拟仪器是计算机技术与测试技术相结合和发展的产物,是充分利用计算机的软、硬件资源,借助一定的硬件模块和软件模块来完成传统电测功能的一类全新概念的智能化仪器系统。
Using geomodel 1 . 0 , users can ( 1 ) manage the database of geochemical data , ( 2 ) get atomic weights and molecular weights of minerals , ( 3 ) model geochemical reaction of the species in the database and , ( 4 ) obtain information about geochemistry and modeling theories . compared with analogous software , geomodel 1 . 0 has followed characteristics : ( 1 ) employing database system instead of text files to save data , ( 2 ) introducing the conception of base species and using it in modeling , and ( 3 ) having a friendly and visual interface which is all in chinese 和同类型的软件相比较, geomodel1 . 0具有以下特点: ( 1 )用数据库而非文本的方式对地球化学反应参数进行管理; ( 2 )引入基物种的概念进行地球化学反应模拟; ( 3 )程序充分的利用计算机的智能特性,控制模拟流程,人为干预很少; ( 4 )允许用户对数据库中的数据进行扩充和编辑; ( 5 )具有简单、明了的可视化中文界面。
This topic can perform the function of calculation , analysis , building the mathematic mould and optimization , which utilize sufficiently the function of the computer in the design of the shipping cooling system . it can also enhance the quality of the production , short the period of the design , reduce the cost of ship , and speed - up the research and exploitation of the new ship and the restoration and development of the production 本课题主要是针对船舶冷却系统,充分利用计算机的功能,实现船舶设计中的计算、分析、建模、优化等功能;提高船舶设计质量、缩短设计周期、降低船舶价格;加快新型船舶研制开发和产品更新换代。
In order not only in theoretics but also in practice to completely resolve the power diagnosis of each cylinder of i . c . engine according to the angular vibration curve of crankshaft , the pc instruments - crankshaft angular vibration measurement and analysis system ( tvm system ) and the electrical calibrator ( tvci system ) , in which the soft and hardware resources of computer are sufficiently utilized , are developed by author 为不但在理论而且在实践上全面解决利用角振动信号诊断内燃机各缸作功状况的问题,作者开发并研制了一套充分利用计算机的软硬件资源的pc仪器? ?曲轴角振动测量分析系统( tvm系统)和电标定器( tvci系统) 。
And the basic conceptions and studying measures of nonlinear mechanics should be introduced into the theoretical mechanics " course and teaching . 2 、 modernization of measures of theoretical mechanics teaching should be focused , and techniques of computer should be introduced into the theoretical mechanics " course and teaching . using matlab software as a study tool , students 最后,本文选取了两个典型实例:以单摆的运动作为“接口” ,在理论力学教学中逐步引入非线性力学的一些基本概念和基本内容;以刚体的定点转动为例介绍利用计算机的数值计算和模拟技术来研究理论力学中的非线性问题。
With the increase of communication systematic complexity , traditional analysis design method can not fit in with the needs of development . if the experiment is carried on the true system directly each time , which not only costs expensivly , takes a lot of time , sometimes even it is difficult to find the very crux of the question . therefore , the effective method is to adopt the emulation technology of the computer . so that the computer ' s ability of high - speed computation can be used , and the analysis , design , optimization of performance and evaluation testing of optic fiber communication equipment and system can be finished 随着通信系统复杂性的增加,传统的分析设计方法已经不能适应发展的需要。如果每次都直接用真实系统进行实验,不仅耗资昂贵,费工费时,有时甚至难于找到问题症结所在。因此,解决上述问题的有效方法是采用计算机仿真技术,利用计算机的高速运算处理能力,完成对光纤通信设备与系统的分析、设计以及性能优化与评估测试。