about spectrum sensing in cognitive

课程设计中首先采用Ising model的思想建立一个二维的模型，然后利用重要性抽样和Monte Carlo方法及其思想模拟铁磁-顺磁相变过程。计算了顺磁物质的能量平均值Ev、热容Cv、磁化强度M及磁化率X的值，进而研究Ev、Cv、M、X与温度T的变化关系并绘制成Ev-T图、Cv-T图、M-T图、X-T图，得出顺磁物质的内能随着温度的升高先增大而后趋于稳定值；热容Cv、磁化率X随着温度的升高先增大后减小；磁化强度M在转变温度Tc处迅速减小为零，找出铁磁相变的转变温度Tc大约为2.35-First of all, curriculum design idea of the Ising model used to establish a two-dimensional model, the importance of sampling and then use Monte Carlo simulation methods and their idea of ferromagnetic- paramagnetic phase transition process. Paramagnetic material calculated average energy Ev, heat capacity Cv, magnetization M and susceptibility X value, and then study Ev, Cv, M, X and temperature changes in the relationship between T and plotted into Ev-T map, Cv- T diagram, MT map, XT maps drawn paramagnetic material can be increased as the temperature increased and then stabilized value heat capacity Cv, magnetic susceptibility X as the temperature increases after the first minus small magnetization M in the transition temperature Tc decreas

（一）功能要求： （1） 信息维护： 要求：学生信息数据要以文件的形式保存，能实现学生信息数据的维护。此模块包括子模块有：增加学生信息、删除学生信息、修改学生信息 （2） 信息查询：要求：查询时可实现按姓名查询、按学号查询 （3） 成绩统计：要求：A输入任意的一个课程名（如数学）和一个分数段（如60--70），统计出在此分数段的学生情况。 （4） 排序：能对用-(1) functional requirements : (a) maintaining information : Request : Student data to information in the form of a document preservation, Students can achieve the maintenance of information and data. This module, including sub-modules are : increased student information, delete information of students, student information changes (2) Information : Request : inquiries can be realized by name inquiries, inquiries by the school, (3) results statistics : requirements : A importation of an arbitrary courses (such as mathematics) and a fraction of the (60-- 70), Statistics from the scores of the students of. (4) Ranking : The ability to use

企业管理系统软件概要设计说明书-enterprise management system software design specification summary

IGBT 驱动 IC 包括先进的控制和保护功能 IGBT 器件在电源应用中由于其高电流/电压能力和易用性方面发挥很大的作用驾驶。大多数工业应用程序使用 1200V IGBT 的三相逆变器。驾驶这些在中型或大型电源应用中的设备需要单独的、 浮动的高和低边驱动程序与电绝缘。控制和保护功能也确保可靠的操作。此后提出的设备是一个新的集成电路直接包含所需的所有功能驱动 IGBT 功率应用中，特别适合于 1200V IGBT 的电流额定值的 25 至80A 类似 Econopak 的模块中。

c语言学习的教程，也可以作为使用时候的参考，有用-c language learning tutorials can also be used as a time reference, useful

在 C++ 中控制Windows关机-in C control Windows shutdown

一些用java语言实现ftp的思想-with some java language ftp thinking

用C++编的小程序，很好的。-C series of the small program, a very good thing.

图像无极放大的相关资料，其中几篇文章介绍了如何轮廓矢量化方面的知识，在二值图放大中有很大的应用，也可应用到灰度图像中-Promise to enlarge the image of the relevant information, including several articles describes how to contour vector of knowledge, in the binary image to enlarge, there is in some applications, can also be applied to grayscale image

midp2.0使用的入门教程，里面有一个小游戏的源码-midp2.0 the entry Guide, which has a small source of the game