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Description: 本程序的运行环境为matlab6.5，在command window下输入数据x和a，然后调用函数pca（x，a）（即本程序的主程序）输入的两个参数的意义是：一个是样本数据x，另外一个是主成分累积贡献率的一个闸值，作为选定主成分个数的一个重要数据。
即可得到样本的协方差矩阵，相关矩阵，相关矩阵的特征根及特征向量，主成分个数和主成分负荷矩阵。
-the procedures for the environment matlab6.5. under the command window in the input data and a x, then the function call pca (x, a) (that is the main program of the procedures) and input parameters of the two is the meaning of : a sample data is x, Another is a principal component of the cumulative contribution rate of a gate value, as a principal component selected a number of important data. Samples can be the covariance matrix, the correlation matrix, a correlation matrix eigenvalue and eigenvector. Principal component and the number of principal components load matrix.
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Size: 1466 |
Author: 郑可可 |
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Description: verilog中调用门级电路的实验程序，实现了门级舰模-call Verilog gate-level circuit of the experimental procedures, to achieve a gate-level ship-mode
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Size: 169984 |
Author: 洪磊 |
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Description: 到底什么是CGI。Common Gate Intergace听起来让人有些专业，我们就管它叫CGI好了。在物理上，CGI是一段程序，它运行在Server上，提供同客户段 Html页面的接口。-What is in the end CGI. Common Gate Intergace sounds like some professional people, we better call it CGI. In physics, CGI is a program that runs on Server to provide customers with the above interface Html page.
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Size: 26624 |
Author: 杜星光 |
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Description: 一位全加器可由两个一位半加器与一个或门构成，该设计利用层次结构描述法，首先设计半加器电路，将其打包为半加器模块；然后在顶层调用半加器模块组成全加器电路-A full adder can be two a half-adder and an OR gate structure, the design is the use of hierarchical description method, first of all the design half-adder circuit, be packaged as a half-adder module and then call at the top half-adder composed of full-adder circuit modules
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Size: 157696 |
Author: 哈哈 |
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Description: 调用门－无驱进入ring0级最简单的方式-Call gate- hassel into the most simple way ring0 class
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Size: 1024 |
Author: final fighter |
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Description: 调用门键盘记录程序编写 :)enjoy it-Call gate keyloggers write:) enjoy it
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Size: 82944 |
Author: 刘阳 |
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Description: 驱动开发，涉及了调用门，中断门，任务门，和陷阱门等等，特别是对调用门的讲解，因为可以实现内核权限的切换。常用于黑客编程。-Driven development, involving a call gate, interrupt gate, task gate, and trap doors, etc., especially on the door called to explain, because you can achieve core competence of the switch. Hackers commonly used in programming.
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Size: 5120 |
Author: zzz |
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Description: SYSENETER是一条汇编指令，它是在Pentium® II 处理器及以上处理器中提供的，是快速系统调用的一部分。SYSENTER/SYSEXIT这对指令专门
用于实现快速调用。在这之前是采用INT 0x2E来实现的。INT 0x2E在系统调用的时候，需要进行栈切换的工作。由于Interrupt/Exception Handler的
调用都是通过 call/trap/task这一类的gate来实现的，这种方式会进行栈切换，并且系统栈的地址等信息由TSS提供。这种方式可能会引起多次内存访
问（来获取这些切换信息），因此，从PentiumII开始，IA-32引入了新指令：SYSENTER/SYSEXIT。有了这两条指令，
从用户级到特权级的堆栈以及指令指针的转换，可以通过这一条指令来实现，并且，需要切换到的新堆栈的地址，以及相应过程的第一条指令的位
置，都有一组特殊寄存器来实现，这类特殊寄存器在IA-32中称为MSR(Model Specific Register)。这里牵涉到3个特殊寄存器-SYSENETER is a compilation of instructions, it is in the Pentium ® II processor or above processor provided as part of a fast system calls. SYSENTER/SYSEXIT This specialized instruction
For fast calls. Before this is achieved using INT 0x2E. INT 0x2E in the system call when the work required to switch the stack. The Interrupt/Exception Handler s
Calls through call/trap/task to implement this type of gate, and in this way would be to switch the stack and system stack address and other information provided by the TSS. This approach may lead to memory access times
Q (to obtain the switching information), therefore, start from the PentiumII, IA-32 introduces a new command: SYSENTER/SYSEXIT. With these two instructions,
From the user level to privilege level of the stack and instruction pointer conversion, achieved through the instructions, and the need to switch to the new stack address, and the corresponding bits in the first instruction of the process
Home, there is a spec
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Size: 30720 |
Author: wu |
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Description: 摘要:介绍了现场可编程门阵列FPGA(Field Programmable Gate Array)器件XCS30的主要特点、技
术参数、内部结构和工作原理，I}述了其在电力系统高速数据采集系统中的应用实例。电力数据采
集装置—馈线终端单元(FTU)需要监测多条线路的电压和电流，实时性要求高，充分利用FPGA
的并行处理能力，对输入信号实行同时采样、分时进行A/D转换，通过在FPGA片上构建的DRAM
进行数据的快速传输。FPGA在系统中承担了较多的实时任务，使DSP芯片TMS320F2812可以在
每个周期时间(20 ms)内完成所有线路的快速傅里叶计算，调用故障分析处理子程序。FPGA降低
了DSP的负荷率.系统的可靠性得到了提高.实际产品应用于配电自动化系统时.故障定位迅速、准确。
-Abstract: this paper introduces the Field reprogrammable Array FPGA (Field Programmable Gate Array) devices XCS30 the main characteristics and skills
Technique parameters, internal structure and working principle, I in its power of} system high speed data acquisition system of application examples. Power data mining
Set device-feeder terminal units (FTU) the need to monitor several routes of voltage and current, high real time requirement, make full use of FPGA
The parallel processing ability, to the input signal and the sampling, points to A/D conversion, through the FPGA in setting up A piece of DRAM
Data fast transmission. FPGA in system for more real-time tasks, make the digital signal processor (DSP) TMS320F2812 can be in
Each cycle time (20 ms) all the finish line fast Fourier calculation, analysis on fault processing procedure call. FPGA reduce
The load rate of DSP. Of the reliability of the system improved. The actual products used in power distribution
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Size: 88064 |
Author: 刘恒 |
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Description: 很老的东西，1993年左右的书，书的作者吕晓庆,通过一个将DOS POST到保护模式的开发环境,对了解保护模式有点参考价值,个人感觉这本
书里边的东西学起来比较顺手.直道现在也几乎没有见到像这本书这样介绍保护模式系统的书.
这本书上的代码有点错误.运行不起来.1998年左右我修改了下,可以用了.可以用这个代码来实作,段,页,多任务,模式切换.CPU异常等处理.
而且里边还带个最简单崩溃的调试器的代码，出现异常时候可以将当前的i386 寄存器给打印出来,
目录中的v86dos里边是v86DOS 玩具操作系统的代码,它将DOS 自举到虚拟86模式,并在之前初始化相关IA32保护模式资源.提供中断调用门,进入保护模式.
目录中的v86base 中是一些玩保护模式下功能调用V86DOS 玩具操作系统调用门的小代码.比如页错换页测试,双任务测试(一个在屏幕上
边打+,一个在屏幕下边打-),这个在DOS 时代确实还比较新鲜.估计这玩艺对了解保护模式可能有点意义,放在硬盘中
差点就把这个东西丢了,嘿嘿,现在放上来共享之.-Very old stuff , about 1993 books , author of the book Lv Xiaoqing , by a will to protected mode DOS POST development environment for understanding a bit protected mode reference value, this personal feeling
Inside the book to learn something more smoothly . Straights are almost not seen this book describes the book as protected mode system.
This book is a bit of code on error . Running up around .1998 I modified the next, can be used can be used to implement this code , section , page , multi-tasking, mode switching . CPU abnormal processing .
And inside also with the most simple code debugger crashes , abnormal when the current i386 can register to print out,
Directory v86dos is v86DOS toys inside the operating system code, it will bootstrap to a virtual 86 DOS mode and protected mode before initializing IA32-related resources . Provide an interrupt call gate , into protected mode.
Directory v86base is some play toys protected mode operating system function calls V86DO
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Size: 73728 |
Author: cjm |
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Description: 操作系统COS+0.11
系统有
1.区分特权等级
2.多进程
3.系统时钟
4.键盘中断
5.系统调用门
6.Shell
8.显示
9.内存管理-perating system COS+0.11
System
1 distinguished privilege level
2 multi process
3 system clock
4 keyboard interrupt
5 system call gate
6.Shell
The 8 display
9 memory management
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Size: 1409024 |
Author: 薛 |
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Description: 门禁系统单元门口控制系统，提供与每个房间的485呼叫通信，控制单元门的开关和管理-Access control system units gate control system, and each room provides 485 call communication, switching and management control unit door
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Size: 17408 |
Author: 陈良富 |
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Description: NT环境下调用中断门运行特权指令,在用户级调用系统级中断-NT environment with interrupt gate privileged instructions, at levels users call system
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Size: 51200 |
Author: iqwlqmedtjmion |
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Description: NT环境下调用中断门运行特权指令,在用户级调用系统级中断-NT environment with interrupt gate privileged instructions, at levels users call system
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Size: 51200 |
Author: viriabne |
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Description: NT环境下调用中断门运行特权指令,在用户级调用系统级中断-NT environment with interrupt gate privileged instructions, at levels users call system
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Size: 51200 |
Author: Lygio |
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Description: NT环境下调用中断门运行特权指令,在用户级调用系统级中断(NT environment with interrupt gate privileged instructions, at levels users call system)
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Size: 50176 |
Author: Dutcan
|
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