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le<b>as</b>t-squares

  • 为 了提高用户身份认证和授权管理的灵活性

    为 了提高用户身份认证和授权管理的灵活性,从We b 应用系统的安全性角度出发,讨论了 一 种在. N E T F r a me w o r k下保证应用程序安全性的身份验证和授权模型,并给出了模型的具体实现方法。 该模型利用 F o r ms身份验证方法对用户的身份进行鉴别。在授权处理上,模型结合统一资源定位( u . J f o r m R e s o u r c e L o c a t o r , U R L ) 授权模式和用户所具有的系统角色,分别从页面级和页面操作级对用户的访问进行 控制。该模型在企业局域网环境内能够提供比较灵活的身份认证和基于角色的授权服务。实际应用表明, 基于该模型的We b应用系统能够对用户的访问进行有效的控制,从而保证了系统的安全性

    标签: 用户 授权 身份认证

    上传时间: 2013-12-31

    上传用户:VRMMO

  • A Convex Hull is the smallest convex polygon that contains every point of the set S. A polygon P is

    A Convex Hull is the smallest convex polygon that contains every point of the set S. A polygon P is convex if and only if, for any two points A and B inside the polygon, the line segment AB is inside P. One way to visualize a convex hull is to put a "rubber band" around all the points, and let it wrap as tight as it can. The resultant polygon is a convex hull.

    标签: polygon S. the contains

    上传时间: 2013-12-23

    上传用户:it男一枚

  • 课程设计: 1.求出在一个n×n的棋盘上

    课程设计: 1.求出在一个n×n的棋盘上,放置n个不能互相捕捉的国际象棋“皇后”的所有布局。 2.设计一个利用哈夫曼算法的编码和译码系统,重复地显示并处理以下项目,直到选择退出为止。 【基本要求】 1) 将权值数据存放在数据文件(文件名为data.txt,位于执行程序的当前目录中) 2) 分别采用动态和静态存储结构 3) 初始化:键盘输入字符集大小n、n个字符和n个权值,建立哈夫曼树; 4) 编码:利用建好的哈夫曼树生成哈夫曼编码; 5) 输出编码; 6) 设字符集及频度如下表: 字符 空格 A B C D E F G H I J K L M 频度 186 64 13 22 32 103 21 15 47 57 1 5 32 20 字符 N O P Q R S T U V W X Y Z 频度 57 63 15 1 48 51 80 23 8 18 1 16 1

    标签:

    上传时间: 2017-04-24

    上传用户:zhyiroy

  • The software is written in assembler, as it is very short and it need the speed in the main loop. T

    The software is written in assembler, as it is very short and it need the speed in the main loop. This is the heart of the synth. To be precise, it s in the 7 lines of assembler that makes up the main loop. The rest of the code is the wavetables and the communication code.

    标签: assembler the software written

    上传时间: 2017-05-17

    上传用户:yxgi5

  • 工业领域串口通信速度慢是个比较突出的问题

    工业领域串口通信速度慢是个比较突出的问题, 而 F T 2 4 5 B M 能够进行 US B和并行 I / O口之间的 协议转换, 在一些条件下能够取代串口. 介绍 F T 2 4 5 B M 芯片的工作原理和功能, 并给出基于 F T2 4 5 B M 的 US B接口电路的应用设计和基于 8 9 c 5 2的汇编及 c 5 1 单片机源程序.

    标签: 工业领域 串口通信 速度 比较

    上传时间: 2017-05-27

    上传用户:kytqcool

  • 距离分辨率 thrt0=1*pi/6 斜视角 angb=0.6*lamda/res_a 合成波束宽度 Rr=5000

    距离分辨率 thrt0=1*pi/6 斜视角 angb=0.6*lamda/res_a 合成波束宽度 Rr=5000 目标中心到航迹垂直距离 V=100 飞机的航速 Tp=1e-6 脉冲宽度 T=10e-3 脉冲周期 B=0.5*c/res_r 脉冲频宽 Kr=B/Tp 频率调制率 fc=c/lamda 载波频率 Rx=Rr*tan(thrt0) 目标区中心横坐标 R0=Rr*sec(thrt0) 目标区中x心距离 Lc0=1.0*angb*R0 正视有效积累长度 Lc=Lc0*sec(thrt0) 斜视有效积累长度 Tc=Lc/V 相干积累时间 wx=100 场景长度

    标签: lamda res_a thrt angb

    上传时间: 2017-06-22

    上传用户:haohaoxuexi

  • As an alternate to the migration scenario, Microsoft offers some interoperation solutions (in an int

    As an alternate to the migration scenario, Microsoft offers some interoperation solutions (in an interoperation scenario, you don t try to turn the MFC code into .NET automatically, you just try to ensure that they can work together):

    标签: interoperation alternate Microsoft migration

    上传时间: 2017-07-01

    上传用户:wys0120

  • This routine calls the glpk library to solve a LP/MIP problem. A typical LP problem has following s

    This routine calls the glpk library to solve a LP/MIP problem. A typical LP problem has following structure: [min|max] C x s.t. Ax ["="|"<="|">="] b {x <= UB} {x >= LB} The calling syntax is: [XMIN,FMIN,STATUS,EXTRA]=glpkmex(SENSE,C,A,B,CTYPE,LB,UB,... VARTYPE,PARAM,LPSOLVER,SAVE)

    标签: problem following routine library

    上传时间: 2014-12-01

    上传用户:changeboy

  • fantastic j2me user interface designer for midp2.0 cldcd 1.1. Works on many phones as a generic appl

    fantastic j2me user interface designer for midp2.0 cldcd 1.1. Works on many phones as a generic application. This is not my own software but for those who don t know it already: check it out. There s a super cool sample application that shows you all of the amazing possibilities for your phone.

    标签: fantastic interface designer generic

    上传时间: 2014-01-17

    上传用户:ecooo

  • We are providing the best information available to us as at date of writing and intend to update it

    We are providing the best information available to us as at date of writing and intend to update it at frequent intervals as things change and/or more information becomes available. However we intend this Q&A as a guide only and recommend that users obtain specific information to determine applicability to their specific requirements. (This is another way of saying that we can t be held liable or responsible for the content.)

    标签: information providing available writing

    上传时间: 2017-07-22

    上传用户:四只眼