登录
首页 » Others » 计算机网络课程设计—公司局域网的组建

计算机网络课程设计—公司局域网的组建

于 2020-12-09 发布
0 305
下载积分: 1 下载次数: 1

代码说明:

公司拥有主机数240台,分布于整座大厦内。该大厦分为5层,其中经理室(主机5台)和人力资源部(主机10台)位于该大厦的顶层,财务部(主机20台)与市场营销部(主机20台)位于4层,其它的部分和楼层分布分别为:网络设计部1部(主机50台)位于3层、网络设计部2部(主机50台)位于2层、培训部(主机50台)位于1层。

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论

0 个回复

  • 网上花店系统的设计与实现【源码+数据库】
    这是我的毕业设计,用到的语言有:jsp+java+struts+json+jquery+mysql数据库这个项目有数据库,导入可以运行!这个项目有前台和后台,前台系统能实现购物车,订单,留言板,等模块!后台模块能实现用户管理,商品添加和删除,留言板管理,超级链接管理等功能!基本功能还是不错的!
    2020-12-06下载
    积分:1
  • c51fps.lib
    很多朋友在用keil仿真时,有时编译不成功,出现错误提示:*** FATAL ERROR L210: I/O ERROR ON INPUT FILE: EXCEPTION 0021H: PATH OR FILE NOT FOUND FILE: E:KEILC51LIBC51FPS.LIB ,这是由于虽然math.h这个头文件添加进去了,但是很多朋友装的keil c不是完整版本,缺少c51fps.lib这个进行浮点运算的库文件,下载这个库文件添加keil c的库中就可以编译成功了。
    2020-12-11下载
    积分:1
  • NUCLEO-STM32H743.zip
    【实例简介】NUCLEO-H743ZI 和 NUCLEO-H743ZI2 的使用手册及相应的原理图和PCB。这两款评估板差别较大,可以查看我的博客,确定想选哪款,并且为了测量功耗进行评估板的调整。
    2021-10-31 00:34:36下载
    积分:1
  • 直接转矩控制仿真
    直接转矩控制的仿真研究,从开环控制到磁链轨迹的形成都做了比较详细的分析
    2020-12-04下载
    积分:1
  • xilinx_CORDIC算法(非常经典)
    FPGA有关的cordic讲解,xilinx公司ppt型的详细讲解,中文。从原理到实现(模型的建立等)。简介目前的具有许多乘法器和加法器。然而各种各样的通信技术和矩阵算法则需要三角函数、平方根等的运算如何在上执行这些运算可以使用查找表或是迭代法本节介绍了算法这是一个移位相加算法允许计算不同的三角函数例如0.0.0包括除法和对数酾数在内的其它函数。xⅫNX关于算法的细节问题,可参见下面的材料技术并不是什么新鲜的东西。事实上它可以追溯到年由发表的一篇文章。在上个世纪五十年代,在大型实际的计算机中的实行移位相加受到了当时技术上的限制,所以使用变得非常必要。到了七十年代,和其他公司出产了手持计算器,许多计算器使用一个内部单元来计算所有的三角函数(了解这件事的人们一定还记得,那时求一个角度的正切值需要延迟大约1秒中)二十世纪八十年代,随着高速度乘法器与带有大存储量的通用处理器的出现, CORDIC算法变得无关紧要了。然而在二十一世纪的今天,对于来说,定是在应用中(诸如多输入多输出(波束形成以及其他自适应系统)计算三角函数的备选技术。wwwsteepestascenCO1笛卡尔坐标平面旋转在坐标平面上将点(,)旋转0角度到点(,)的标准方法如下所示00这被称为是平面旋转、向量旋转或者线性矩阵代数中的旋转。xⅫNX上面的方程组同样可写成矩阵向量形式00例如一个相移为wwwsteepestascenCO1伪旋转通过提出因数,方程可写成下面的形式000(0)如果去除0项,我们得到伪旋转方程式0)6(0)即旋转的角度是正确的,但是与的值增加9倍由于所以模值变大。注意我们并不能通过适当的数学方法去除0项然而随后我们发现去除θ项可以简化坐标平面旋转的计算操作。xⅫNX在坐标平面中0因此经过伪旋转之后,向量的模值将增加0倍。向量旋转了正确的角度但模值出现错误。wwwsteepestascenCO1方法方法的核心是伪旋转角度θ,其中θ。故方程为下面的表格指出用于算法中每个迭代的旋转角度精确到位小数xⅫNX在这里,我们把变换改成了迭代算法。我们烀各种可能的旋转角度加以限制,使得对任意角度θ的旋转能够通过一系列连续小角度的旋转迭代来完成。旋转角度遵循法则:0,遵循这样的法则,乘以正切项变成了移位操作。前几次迭代的形式为第次迭代旋转第次迭代旋转第次迭代旋转等很显然,每次旋转的方向都影响到最终要旋转的累积角度。在≤日的范围内的任意角度都可以旋转。满足法则的所有角度的总和0为。对于该范围之外的角度,可使用三角恒等式转化成该范围内的角度。当然,角分辨率的数据位数与最终的精度有关。。因此,在次旋转以后,为了标定伪旋转的幅度,要求乘以一个系数角分辨率的数据位数对最终的旋转精度非常关键。wwwsteepestascenCO1
    2020-11-29下载
    积分:1
  • 基于高光谱成像的蓝莓内部品质检测 特征波长选择方法研究
    在特征波长选取方面有一些创新,可以作为参考。在特征波长选取方面有一些创新,可以作为参考。(基于高光谱成像的蓝莓内部品质检测特征波长选择方法研究古文君1 ,田有文 1* ,张芳1 ,赖兴涛 1 ,何宽1 ,姚萍1 ,刘博林 2)586-482016620010~15mm0.8~2.3g。fone3:(InSpector V10E, Spectral InFinland)1392pix×1040pixCCDL CCD2(IGV-B141OM, IMPERX Incorporated, USA), 150W1. CCD Camera; 2.Spectrometer; 3.Shot; 4. Light source; 5. Samples(3900 Illuminatior, Illumination Tech6.Translationplatform7.Lightsourcecontroller;8.computernologies inc.,USA)、(IRCP0076-19. Translation platform controllerCOM,)、(120cm×50cmx(DELL VoStro 5560D-1528Figure 1 Schematic diagram of hyperspectral imagingcmsystem400~1000nm,4722.8nmRRGY-4(10mm)(DBR45(successive projections algorithm, SPA(stepwise multiple linear regression, SMLR)(SPA)(SMLR)SPASPASMLRSPA-SPA、SMLR_SMLR、SPA- SMLRSMLR-SPA21994-2018ChinaAcadcmicJournalElcctronicPublishingHousc.Allrightsrcscrved.http://www.cnki.nct5871.6BP(error back propagation)BP17(correlation coeffiient of calibration, Re)(root mean square error of calibration set, RMSEC)correlation coeffiient of pre-diction, Rp)(root mean square error of prediction set, RMSEP)ENVI 4.8(Research System Inc, ), MATLAB 2014a(The Math Works Inc)、TheUnscrambler9.7、 Excel2010(Ⅵ icrosoftdgle banddWcvef.BP models for soluble solidsThe selected characteristic wavelengthCurve of relative reflectanceExtract the region of interescontent and firmness prediction2figure 2 Flow chart of data processing280mm,68ms,28mm·s-。99%202.2600nm600nm2b2c)21994-2018ChinaAcadcmicJournalElcctronicPublishingHousc.Allrightsrcscrved.http://www.cnki.nct5884823(2f)BPSavitzky-Golasavitzky -golayTable 1 The effect of different spectra preprocessingCalibration setPredictioSpectrum typeRMSECRMSEPOriginal spcctrum0.933/0.9230.3510.4040.9200.9100.508/0.319MSCThe spectrum after MSC processing0.940/0.9450.56lO.3120.9190.9320.516/0.282SNThe spectrum after SNV processin0.93709340.60210.24309220.9010.6320.462Savitzky-golayThe spectrum after Savitzky-Golay processing 0.955/0.9550.3240.2410.951/0.9490.400/0.2782.5SPA-SPA SMLRSMLR SPA-SMLR SMLR-SPASPA-SPASPASavitzky-GolaySPATable 2 The results of multi-stage characteristic wavelength selection methodnmCharacteristie wavelength selection methodSPA-SPA452,455,470,482,490,785,893,912,921,942,950455,470,482,785,893.912SMLR-SMLR457,508,516,534,543,51,556,568,712,720.774,778508,534,543,712,720,774SPA-SMLR452,455,470,482,490,785,893,912,921,942,950452,470,482,490,893,912SMLR-SPA457,508,516,534,543,551,556,568,712,720,774,78534,7202.6Savilzky-gola(FS)392SPA-SPASMLR-SMLRSMLR-SMLRSMLR-SPABPBP0.001500021994-2018ChinaAcadcmicJournalElcctronicPublishingHousc.Allrightsrcscrved.http://www.cnki.nct589BPBPSPA-SPARp RMseP0.9520.391°Brix,RpRMSEP0.9530.234BrixTable 3 Detection results of soluble solid content and firmness of blueberry based on different multi-stagecharacteristic wavelength selection methodsCalibration setPrediction setCharacteristic selection method Wavelength numberRMSECRMSEP3929550.9550.324/0.2410.9510.9490.400/0.278SPA-SPA0.9590.9560.3180.1530.9520.9530.391/0.234SMLR-SMLR0.9560.9340.414/0.243912109020.559/0.349SPA SMLR0.828/0.8581.3670.58582208091.440/0.719SMLR- SPA20.958/0.9360.402/0.3359320.9280.435/0,4041387nm1229nm91.5%BPRRMSEP0.904215.163lBP3Rv0.84V0.94Rv0.83,SEV0.63。400-1000nmSavitzky-GolayBPSPA-SPASPA-SPA21994-2018ChinaAcadcmicJournalElcctronicPublishingHousc.Allrightsrcscrved.http://www.cnki.nct59048[1 KADER F,ROVEL. B Fractionation and identification of the phenolic compounds of highbush blueberries(Vaccinium corymbosumLUJ].Food Chemistry, 1996,55(1): 35-40「J,2012,33(1):340-342,2017,38(2):301-305.[4 MENDOZA F, LU R, ARIANA D,et al. Integrated spectral and image analysis of hyperspectral scattering data for prediction ofple [ruil firmness and soluble solids conlenl[J] Poslharvesl Biology and Technology, 2011, 62(2: 149-160[5 SUN M J, ZHANG D, LIU L,et al. How to predict the sugariness and hardness of melons a near-infrared [J]. Food Chemistry,2017,218(3:413-42116 SIEDLISKA A, BARANOWSKI P, MAZUREK W, ct al. Classification models of bruise and cultivar detection on the basis of hy-perspectral imaging data[J]. Computers and Electronics in Agriculture, 2014, 106: 66-74[7 LIU D, SUN D W, ZENG X N, el al. Recenl aDvances in wavelength seleclion lechniques for hyperspectral image processing inthe food industry[J]. Food Bioprocess Technol, 2014, 7: 307-323[8 ZHANG C, GUO C T, LIU F,et al. Hyperspectral imaging analysis for ripeness evaluation of strawberry with support vector ma-chine[j] Journal of Food Engincering, 2016, 179: 11-18[9J,2016,47(5:634-6402009,29(:1611-1615201536(12)171-17612]J,2012,32(11:3093309[13] LI B C, HOU B L, ZHANG D W,et al. Pears characteristics (soluble solids content and firmness prediction, varieties) testingInethods based on visible-near infrared hyperspecTral imaging[J]. OpLik, 2016, 127: 2624-2630[14] FAN S X, ZHANG B H,LI J B, et al. Prediction of soluble solids content of apple using the combination of spectra and textural features of hyperspectral reflectance imaging data[J. Postharvest Biology and Technology, 2016, 121: 51-61[15 RAJKUMAR P, WANG N,EIMASRY G, et al.Studies on banana fruit quality and maturity stages using hyperspectral imaging[ JIJournal of Food Engineering 2012, 108: 194-200,2015,36(16):10172015,35(8:2297-2302[18]WANG N,2007,23(2:151-155.「192008,39(5):91-9320」201536(10:70-74.[21] WU D, SUN D WAdvanced applications of hyperspectral imaging technology for food quality and safety analysis and assess-ment a review part T[J]. Innovative Food Science and Emerging Technologies, 2013, 19(4): 1-14J2014,35(8:57-61BP,2012.124」13,44(2):142-146.25],201523(6:1530-1537M011:41-48.[27,2013,24(10:1972-19762010,30(10):2729-2733?1994-2018ChinaAcadcmicJournaleLcctronicPublishingHousc.Allrightsreservedhttp://www.cnki.nct
    2020-12-07下载
    积分:1
  • leaflet-velocity,leaflet风场流线插件
    leaflet-velocity,leaflet风场流线插件个人总结的使用方式,希望对你有用https://blog.csdn.net/qq_35131811/article/details/82761238
    2020-12-12下载
    积分:1
  • Halcon与C#混合窗体控件源代码
    如果采用C#和Halcon混合编程做图像视觉,这是一个不可多得的可供直接拿来使用的源代码,写的非常好。如果你是刚入门的,那么就耐心的去读每一行代码,直到把它搞清楚,相信你最终一定得益匪浅。
    2020-12-11下载
    积分:1
  • 基于Matlab实现的指纹图像细节特征提取
    很实用的程序,详细介绍了如何实用软件识别指纹。几乎完全不懂得人也可用DO+ p1+p2+p3+p5+p6+4][5Qif(n==7|n==56(t)M ahbdpbt(y(j,x(i),’bo);6化正像细化处理图信c)特证液果for i=1:t-15d= sqrt((x(i)-x(D)2+(y(i)-y(j)2);FV C2000100if d< %100typeI(1)=Qbreakb1(i=o1944-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreservedhttp://www.cnki.net9436[2MATLAB 6.5 M.152003-3.LD I1/3,2002-513(5):946~956[5 Dario m ai m em ber Eee, and d av de m alon i d irect grayscalem inu tae detection in fingerpr ints J]. EEE tran sactions onpat te m analys s and m ach ine inte lligen ce 1997 19(1): 27-40M ahbMATLAB 6 5[M]2004-51/3(19815-),((1947-),([1] R Clarke Hum an ien tification in in fom at ion systen s M anagem ent ch allenges and pub le policy issues[ J. In fo T echnol People1994,7(4):6~37.(1978.1-),()113)[3 S Coleri M Ergen A Pu ri and A Bahai Channel E stim ationTechn iqu es Based on Pilot a range ent in OFDM System s[ JIL abV IEWwireEEE T ran sact in s on Broadcast ing Sep 2002 48( 3):223lessan-ofdm229[4 X Tang M a buini and a JGo Hsm ith E fect of Channel Est im artion E rror on M-QAM BER Perfm ance in Ray le igh Fad ing J IEEE T ran sactions On Commun ications Dec 1999, 47(121856LabV ieWieee 802 1 6d[5 P Das and D Koch On the U se ofV iu al Programm ng LanguagesO FDMfor Commun ication System Sim ulation[C IEEE Proceedings ofSoutheast Con, Apr 1991(BER)[6 M C Jeruch m, P B alb an and K s Shanmugan Simu lat ion oBERCommun ica tion Sy stems M odeling M ethodology and Techn iques[J. K hw er A cadem i 2000BER[7] V. Erceg L J ste in SY Tindra SR Parkoff A G up ta BKulic A a Julius and R B inchi An Em p irically Based Path LossIeee 802 16dOFDMM odel for W ire kss Ch annes in Suburban Environm ents[ J]. EEEJoumal on Selected A reas in C mmun ica tions Ju I 1999(197610-),[1] IKoffm an and v Rom an. Broadband W iess a ccess So hi tionsBased on O FDM A ccess in 802 16[ J IEEE Camm unicat ionsM agazne, A pr 2002(19659-),(),[21 EKlund R BM arks K L Stanwood and Sw ang IEEE Standard802. 16a a Techn ical very iew of thew ireless antm a ir In ter(19776-),(face for B roa dband W ire less access[ J]. IEEE Camm unicat ionsM agaz ne Jun200240(6):98-107185o1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreservedhttp://www.cnki.net
    2020-11-30下载
    积分:1
  • Qt下的自定义图像显示控件
    支持图像的放大缩小和移动,适合图像开发者的入门借鉴,支持高帧率相机的图像采集得显示。
    2020-12-07下载
    积分:1
  • 696518资源总数
  • 106259会员总数
  • 28今日下载