電力系統(tǒng)在臺(tái)穩(wěn)定計(jì)算式電力系統(tǒng)不正常運(yùn)行方式的一種計(jì)算。它的任務(wù)是已知電力系統(tǒng)某一正常運(yùn)行狀態(tài)和受到某種擾動(dòng)，計(jì)算電力系統(tǒng)所有發(fā)電機(jī)能否同步運(yùn)行 1運(yùn)行說(shuō)明： 請(qǐng)輸入初始功率S0，形如a+bi 請(qǐng)輸入無(wú)限大系統(tǒng)母線電壓V0 請(qǐng)輸入系統(tǒng)等值電抗矩陣B 矩陣B有以下元素組成的行矩陣 1正常運(yùn)行時(shí)的系統(tǒng)直軸等值電抗Xd 2故障運(yùn)行時(shí)的系統(tǒng)直軸等值電抗X d 3故障切除后的系統(tǒng)直軸等值電抗 請(qǐng)輸入慣性時(shí)間常數(shù)Tj 請(qǐng)輸入時(shí)段數(shù)N 請(qǐng)輸入哪個(gè)時(shí)段發(fā)生故障Ni 請(qǐng)輸入每時(shí)段間隔的時(shí)間dt
標(biāo)簽： 電力系統(tǒng) 正 計(jì)算 運(yùn)行
上傳時(shí)間： 2015-06-13
上傳用戶：it男一枚
上下文無(wú)關(guān)文法（Context-Free Grammar, CFG）是一個(gè)4元組G=(V, T, S, P)，其中，V和T是不相交的有限集，S∈V，P是一組有限的產(chǎn)生式規(guī)則集，形如A→α，其中A∈V，且α∈(V∪T)*。V的元素稱為非終結(jié)符，T的元素稱為終結(jié)符，S是一個(gè)特殊的非終結(jié)符，稱為文法開(kāi)始符。 設(shè)G=(V, T, S, P)是一個(gè)CFG，則G產(chǎn)生的語(yǔ)言是所有可由G產(chǎn)生的字符串組成的集合，即L(G)={x∈T* | Sx}。一個(gè)語(yǔ)言L是上下文無(wú)關(guān)語(yǔ)言（Context-Free Language, CFL），當(dāng)且僅當(dāng)存在一個(gè)CFG G，使得L=L(G)。 *⇒ 例如，設(shè)文法G：S→AB A→aA|a B→bB|b 則L(G)={a^nb^m | n,m>=1} 其中非終結(jié)符都是大寫字母，開(kāi)始符都是S，終結(jié)符都是小寫字母。
標(biāo)簽： Context-Free Grammar CFG
上傳時(shí)間： 2013-12-10
上傳用戶：gaojiao1999
check all，in vb,for hotel
上傳時(shí)間： 2015-11-01
上傳用戶：hxy200501
一:需求分析 1. 問(wèn)題描述 魔王總是使用自己的一種非常精練而抽象的語(yǔ)言講話,沒(méi)人能聽(tīng)懂,但他的語(yǔ)言是可逐步解釋成人能聽(tīng)懂的語(yǔ)言,因?yàn)樗恼Z(yǔ)言是由以下兩種形式的規(guī)則由人的語(yǔ)言逐步抽象上去的: ----------------------------------------------------------- (1) a---> (B1)(B2)....(Bm) (2)[(op1)(p2)...(pn)]---->[o(pn)][o(p(n-1))].....[o(p1)o] ----------------------------------------------------------- 在這兩種形式中,從左到右均表示解釋.試寫一個(gè)魔王語(yǔ)言的解釋系統(tǒng),把 他的話解釋成人能聽(tīng)得懂的話. 2. 基本要求: 用下述兩條具體規(guī)則和上述規(guī)則形式(2)實(shí)現(xiàn).設(shè)大寫字母表示魔王語(yǔ)言的詞匯 小寫字母表示人的語(yǔ)言的詞匯 希臘字母表示可以用大寫字母或小寫字母代換的變量.魔王語(yǔ)言可含人的詞匯. (1) B --> tAdA (2) A --> sae 3. 測(cè)試數(shù)據(jù): B(ehnxgz)B 解釋成 tsaedsaeezegexenehetsaedsae若將小寫字母與漢字建立下表所示的對(duì)應(yīng)關(guān)系,則魔王說(shuō)的話是:"天上一只鵝地上一只鵝鵝追鵝趕鵝下鵝蛋鵝恨鵝天上一只鵝地上一只鵝". | t | d | s | a | e | z | g | x | n | h | | 天 | 地 | 上 | 一只| 鵝 | 追 | 趕 | 下 | 蛋 | 恨 |
上傳時(shí)間： 2014-12-02
上傳用戶：jkhjkh1982
CFlowchartEditor is an extension of CDiagramEditor. CDiagramEditor is a vector editor, with a CWnd-derived window (CDiagramEditor), a data container (CDiagramEntityContainer) holding the draw-objects, undo stack and managing copy and paste, and objects derived from CDiagramEntity representing objects drawn on screen. CDiagramEditor lacks one feature (that is difficult to implement in both simple and general fashion) - links. Manually maintaining links in a - for example - flowchart or network topography map is unwieldy. Therefore, I ve created a reference implementation for one way of adding this functionality.
標(biāo)簽： CDiagramEditor CFlowchartEditor extension CWnd-d
上傳時(shí)間： 2015-11-21
上傳用戶：氣溫達(dá)上千萬(wàn)的
Wiley出版，共20章，大小為12M 1.Introduction to the Series 60 Platform 2.Overview of the Series 60 Platform 3.Design Patterns for Application Development 4.Software Development on the Series 60 Platform 5.Platform Architecture 6.User-centered Design for Series 60 Applications 7.Testing Software 8.Application Framework 9.Standard Panes and Application Windows 10.Lists and List Types 11.Other User Interface Components 12.View Architecture 13.Audio 14.Customizing the Series 60 Platform 15.Communications Architecture 16.Communications Application Programming Interface 17.Messaging 18.Connectivity 19.Programming in Java for Smartphones 20.Midlet User Interface Framework
標(biāo)簽： Wiley
上傳時(shí)間： 2013-12-23
上傳用戶：zgu489
Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book and Addison Wesley Longman Inc., was aware of a trademark claim, the designations have been printed in initial caps or all caps. The authors and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein. The publisher offers discounts on this book when ordered in quantity for special sales. For more information, please contact:
標(biāo)簽： manufacturers designations distinguish products
上傳時(shí)間： 2017-01-23
上傳用戶：woshiayin
I was trying to develope a programme to make a slide show of all the pictures of a folder using vb.net. I have spent lot of time in net for searching this but all in vain, I didn t get a simple programme to solve the same and lastly I gave myself a try for the same and developed the code, I have used there a folderbrowserdialogue and a timer with a picture box control and in coding I have used IO name spaces to get the pathe and folder info here is the code. Enjoy Subhankar
標(biāo)簽： programme develope pictures trying
上傳時(shí)間： 2017-04-24
上傳用戶：a3318966
C280x C/C++ Header Files and Peripheral Examples The DSP28xx C/C++ peripheral header files and example projects files facilitate writing C/C++ Code for the TI鈥檚 28xx MCUs. The code can be used as a learning tool or as the basis for a development platform depending on the current needs of the user. We suggest that you immediately download these header files in order for an easier transition to understanding the 28xx peripherals.
標(biāo)簽： Peripheral peripheral and Examples
上傳時(shí)間： 2014-01-24
上傳用戶：fandeshun
將魔王的語(yǔ)言抽象為人類的語(yǔ)言：魔王語(yǔ)言由以下兩種規(guī)則由人的語(yǔ)言逐步抽象上去的：α-〉β1β2β3…βm ；θδ1δ2…-〉θδnθδn-1…θδ1 設(shè)大寫字母表示魔王的語(yǔ)言，小寫字母表示人的語(yǔ)言B-〉tAdA，A-〉sae，eg：B(ehnxgz)B解釋為tsaedsaeezegexenehetsaedsae對(duì)應(yīng)的話是：“天上一只鵝地上一只鵝鵝追鵝趕鵝下鵝蛋鵝恨鵝天上一只鵝地上一只鵝”。(t-天d-地s-上a-一只e-鵝z-追g-趕x-下n-蛋h-恨)
上傳時(shí)間： 2013-12-19
上傳用戶：aix008
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