DVB Document A053 Extensions to the Common Interface Specification

基于X3D／VRML的三维场景设计与实现,介绍的比较详细.适合学习X3D和VRML-Based on the three-dimensional scenes X3D/VRML design and realization of a more detailed introduction. For learning X3D and VRML

摘要:报适了一种直接序列软扩频调制解调器的SAw实现方案，并给出了相应的实验结果。该方案刘一提高系统抗干扰能力、频宽利川等方而均具有与其他技术不同的特点。同时，该技术方案为进一步研究DS-0FDM下了基石出。 -Abstract: al fitness, a direct-sequence spread-spectrum modem soft Saw the realization of the program, and gives the corresponding experimental results. Liu of the program to improve system anti-interference ability, such as bandwidth Lichuan side and with other technologies have different characteristics. At the same time, the technology program for further study on DS-0FDM out under the foundation.

SM5004,完全可以取代mcx314的一款FPAG芯片！-SM5004, is entirely possible to replace a MCX314 of FPAG chips!

Windows的资源管理器想必大家都用过，该程序的窗口一分为二，左边的窗口显示本机当前所有驱动器以及驱动器中的所有文件夹，当用户单击文件夹后，如果该文件夹下面还有子文件夹，则上层文件夹展开显示下级的文件夹；否则，右边的窗口显示选择文件夹下的文件。该文档提供了实现方法。-Windows resource manager must have all used, the procedure is divided into two one window. The left window shows the current machine and all Drivers Drivers of all folders when users click the folder, If the folder Read Documents folder, the folder launched upper and lower levels show the folder; Otherwise, the right to choose a window shows folder of documents. The document provides a method.

基于BP神经网络的电机系统的波形控制 阐述了BP神经网络模型和算法，建立了电流型交――交变频同步电动机的波形控制神经网络BP模型，并将计算结果与仿真结果作了比较。-BP neural network-based motor control system waveform expounded BP neural network models and algorithms of current pay-- Cycloconverter Synchronous Motor waveform control neural network model, results of the computation and simulation results were compared.

根据云南航天提供的平面图及应用要求，云南航天网络系统具成必需达到以下要求： 1．实现办公信息管理、局部办公本身办公自动化 作为现代化的办公信息管理，大楼内部实现办公自动化及其他管理关键性应用，必须依靠先进的计算机网络技术，综合布线系统是一套基本的布线网络，为计算机网络的应用提供必要的基础。 2．实现油库域网与外部网络的连接 云南航天局域网是以综合布线系统为传输介质的。要实现云南航天局域网与外部网络的连接，也必须通过综合布线系统。-Yunnan space under the floor plan and application requirements, Yunnan space into a network system is necessary to achieve the following requirements : 1. Achieving information management office, local office automation office itself as a modern office information management, internal realization of the building and other office automation management of critical applications, we must rely on advanced computer network technology, integrated wiring system is the basic set of network cabling for computer networks should be used to provide the necessary infrastructure. 2. To achieve the depot area network and external network connections Yunnan space is an integrated LAN cabling systems for the transmission medium. To achieve Yunnan with the outside space LAN network connectio

在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。在本次毕业设计中我们选择使用单片机来制作数字频率计，并在实际制作中采用了直接测频法。利用延时产生的时基门控信号来控制闸门，通过在单位时间内计数器记录下的脉冲个数计算出输入信号的频率，最终送入LCD中显示。这样制作出来的频率计不仅可以满足设计题目的参数要求，而且具有了单片机的稳定性和成熟性，且控制能力强，是一种低成本，高可靠的设计方案。-In electronic technology, the frequency is one of the most basic parameters, but also with a number of electrical parameters of the measurement program, the measurement results have a very close relationship between the frequency of measurement, therefore it is even more important. Measurement of the frequency of a number of means, electronic measurement of the frequency counter with high precision, easy to use, rapid measurement, and measurement is easy to realize the advantages of process automation is an important means of measuring the frequency of one. Graduates in this design we have chosen to make use of single-chip digital frequency meter, and used in the actual production of a direct

、探索曲线拟合的不同方式，使学生了解泰勒公式的意义，并且对运用定积分计算任意平面图形的面积有更深入的认识。 2、能初步运用所学数学知识及数学软件工具matlab解决实际问题。 -To explore different ways of curve fitting, so that students understand the significance of Taylor" s formula, and the right to use the definite integral area calculation of arbitrary planar graph to have a better understanding. 2, can be the initial use of the mathematics knowledge and mathematics matlab software tools to solve practical problems.

该系统是一个比较简单的高校工资管理系统，详细内容可以见文档说明。 PS：本人是vc＋＋的初学者，希望能通过审核，加入这个大家庭，与大家共同学习进步！-The system is a relatively simple college wage management system, details of the document can see that. PS: I am a beginner of vc hope to examine, to join the family, with everyone together to learn and progress!

基于ＬＡＢＶＩＥＷ主菜单的设计方法，详细介绍了菜单设计过程-LABVIEW-based main menu design method, described in detail the design process menu