30号作业

飞行器上升段航迹优化问题，采用DIDO工具箱进行全弹道轨迹优化(DIDO toolbox is used to optimize the whole trajectory of aircraft in ascent phase)

pajek 教程每一个章节的代码实例，适合初学者学习(data and extras,appendix,chapter1,chapter2,chapter3,chapter4)

财政管理系统 -financial management systems of finan cial management systems Financial Management System

控制器与电机驱动器之间的连接板设计图,是为了保护控制器电路的安全.-Controller and motor drive design连接板between, are in order to protect the safety of the controller circuit.

谷物作为主要粮食和饲料作物,在农业生产中占有重要地位。提高谷物产量和质量的主要方法是选育出优质品种,而在选育品种过程中,对种子的计数是不可缺少的内容。目前,种子的计数方法通常采用人工计数,或半自动的光电计数器,很显然传统的计数方法存在着效率低、准确性不高等缺点。笔者利用计算机图像识别和处理技术实现考种过程中的计数,为谷物粒群的识别、精选、分级等的进一步研究奠定必要的理论与实践基础,并为育种工作提供一种高效、快捷的谷物计数新技术 用Matlab实现这种方法，既能分步对谷物颗粒图像预处理算法进行仿真测试，又可以很直接地得到谷物颗粒个数的结果。实验证明，用Matlab实现的处理结果比较理想，满足识别的应用性。本文介绍用matlab实现了对谷物颗粒图像的灰度化处理、去除噪声处理、灰度图像的二值化、谷物颗粒的数值计算等。并选取较好的处理步骤和算法参数解决谷物颗粒图像预处理的问题。(The grain plays an important role in the production of agriculture as main food supplyment of mankind and animals. The main way to improve grain yield and quality is to breed high-quality varieties.However, in the process of breeding varieties, counting seeds is an essential element.Nowadays, the counting of seeds is usually done manually,or semi-automatic photoelectric counter. It is obvious that the traditional counting method has the disadvantages of low efficiency and low accuracy. The use of computer image recognition and processing technology to achieve the counting test in the process of selection for identification, grain group, lay the theoretical and practical foundation for further research of the necessary classification, and for breeding work provides an efficient, fast new grain counting technique)

说明：  使用matlab搭建了一个直流稳压电源的模型，两级式，前级不控整流，后级升降压(A model of DC regulated power supply is built by using matlab. It is two-stage, with uncontrolled rectifier at the front stage and step-up and step-down at the back stage.)

Engineering mechanics : dynamics / R.C. Hibbeler. 此书的两张配套软盘-Engineering mechanics : dynamics/R. C. Hibbeler. This book, the two matching floppy

interspire email marketer 6.2

用于计算偶极子天线的三维fdtd程序，用PML吸收边界条件(used to calculate the dipole antenna 3D fdtd procedures, with PML absorbing boundary conditions)

说明：  Description about this retard programs i dont know what it is