c#數據庫開發實例:有很多的實例，對學習非常的有意義！ 酒店管理系統源代碼 醫院信息管理系統源代碼 圖書館管理系統源代碼 財務管理系統源代碼 生產管理系統源代碼 人力資源管理實例程序源代碼 進銷存管理實例程序源代碼 if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采購訂單_供貨商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采購訂單] DROP constraint 采購訂單_供貨商_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采購訂單歷史_供貨商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采購訂單歷史] DROP constraint 采購訂單歷史_供貨商_fk
上傳時間： 2013-10-30
上傳用戶：392210346
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采購訂單_供貨商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采購訂單] DROP constraint 采購訂單_供貨商_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采購訂單歷史_供貨商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采購訂單歷史] DROP constraint 采購訂單歷史_供貨商_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采購合同_供貨商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采購合同] DROP constraint 采購合同_供貨商_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[進貨單_供貨商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[進貨單] DROP constraint 進貨單_供貨商_fk
上傳時間： 2013-11-15
上傳用戶：wkxiian
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_工資發放歷史表_職員基本信息表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[工資發放歷史表] DROP constraint FK_工資發放歷史表_職員基本信息表 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_月工資統計表_職員基本信息表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[月工資統計表] DROP constraint FK_月工資統計表_職員基本信息表 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_職員懲罰表_職員基本信息表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[職員懲罰表] DROP constraint FK_職員懲罰表_職員基本信息表
上傳時間： 2014-11-17
上傳用戶：xinzhch
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[mrp物料需求計算_物料編號_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[mrp物料需求計算] DROP constraint mrp物料需求計算_物料編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[mrp物料需求計算結果_物料編號_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[mrp物料需求計算結果] DROP constraint mrp物料需求計算結果_物料編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[mrp物料需求歷史_物料編號_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[mrp物料需求歷史] DROP constraint mrp物料需求歷史_物料編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[物料清單_物料編號_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[物料清單] DROP constraint 物料清單_物料編號_fk
上傳時間： 2013-11-23
上傳用戶：wcl168881111111
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_分錄表_憑證表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[分錄表] DROP constraint FK_分錄表_憑證表 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[本期匯總賬簿_科目代碼_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[本期匯總賬簿] DROP constraint 本期匯總賬簿_科目代碼_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[本期明細賬簿_科目代碼_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[本期明細賬簿] DROP constraint 本期明細賬簿_科目代碼_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[分錄表_科目代碼_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[分錄表] DROP constraint 分錄表_科目代碼_fk GO
上傳時間： 2013-11-20
上傳用戶：清山綠水
if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[圖書丟失_圖書編號_fk]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書丟失] DROP constraint 圖書丟失_圖書編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[FK_圖書罰款_圖書信息]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書罰款] DROP constraint FK_圖書罰款_圖書信息 GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[圖書歸還_圖書編號_fk]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書歸還] DROP constraint 圖書歸還_圖書編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[圖書借閱_圖書編號_fk]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書借閱] DROP constraint 圖書借閱_圖書編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[FK_圖書征訂_圖書信息]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書征訂] DROP constraint FK_圖書征訂_圖書信息 GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[圖書注銷_圖書編號_fk]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書注銷] DROP constraint 圖書注銷_圖書編號_fk
上傳時間： 2014-05-04
上傳用戶：togetsomething
15.2 已經加入了有關貫孔及銲點的Z軸延遲計算功能. 先開啟 Setup - constraints - Electrical constraint sets 下的 DRC 選項. 點選 Electrical constraints dialog box 下 Options 頁面 勾選 Z-Axis delay欄.
上傳時間： 2013-11-12
上傳用戶：Late_Li
第一部分 信號完整性知識基礎.................................................................................5第一章 高速數字電路概述.....................................................................................51.1 何為高速電路...............................................................................................51.2 高速帶來的問題及設計流程剖析...............................................................61.3 相關的一些基本概念...................................................................................8第二章 傳輸線理論...............................................................................................122.1 分布式系統和集總電路.............................................................................122.2 傳輸線的RLCG 模型和電報方程...............................................................132.3 傳輸線的特征阻抗.....................................................................................142.3.1 特性阻抗的本質.................................................................................142.3.2 特征阻抗相關計算.............................................................................152.3.3 特性阻抗對信號完整性的影響.........................................................172.4 傳輸線電報方程及推導.............................................................................182.5 趨膚效應和集束效應.................................................................................232.6 信號的反射.................................................................................................252.6.1 反射機理和電報方程.........................................................................252.6.2 反射導致信號的失真問題.................................................................302.6.2.1 過沖和下沖.....................................................................................302.6.2.2 振蕩：.............................................................................................312.6.3 反射的抑制和匹配.............................................................................342.6.3.1 串行匹配.........................................................................................352.6.3.1 并行匹配.........................................................................................362.6.3.3 差分線的匹配.................................................................................392.6.3.4 多負載的匹配.................................................................................41第三章 串擾的分析...............................................................................................423.1 串擾的基本概念.........................................................................................423.2 前向串擾和后向串擾.................................................................................433.3 后向串擾的反射.........................................................................................463.4 后向串擾的飽和.........................................................................................463.5 共模和差模電流對串擾的影響.................................................................483.6 連接器的串擾問題.....................................................................................513.7 串擾的具體計算.........................................................................................543.8 避免串擾的措施.........................................................................................57第四章 EMI 抑制....................................................................................................604.1 EMI/EMC 的基本概念..................................................................................604.2 EMI 的產生..................................................................................................614.2.1 電壓瞬變.............................................................................................614.2.2 信號的回流.........................................................................................624.2.3 共模和差摸EMI ..................................................................................634.3 EMI 的控制..................................................................................................654.3.1 屏蔽.....................................................................................................654.3.1.1 電場屏蔽.........................................................................................654.3.1.2 磁場屏蔽.........................................................................................674.3.1.3 電磁場屏蔽.....................................................................................674.3.1.4 電磁屏蔽體和屏蔽效率.................................................................684.3.2 濾波.....................................................................................................714.3.2.1 去耦電容.........................................................................................714.3.2.3 磁性元件.........................................................................................734.3.3 接地.....................................................................................................744.4 PCB 設計中的EMI.......................................................................................754.4.1 傳輸線RLC 參數和EMI ........................................................................764.4.2 疊層設計抑制EMI ..............................................................................774.4.3 電容和接地過孔對回流的作用.........................................................784.4.4 布局和走線規則.................................................................................79第五章 電源完整性理論基礎...............................................................................825.1 電源噪聲的起因及危害.............................................................................825.2 電源阻抗設計.............................................................................................855.3 同步開關噪聲分析.....................................................................................875.3.1 芯片內部開關噪聲.............................................................................885.3.2 芯片外部開關噪聲.............................................................................895.3.3 等效電感衡量SSN ..............................................................................905.4 旁路電容的特性和應用.............................................................................925.4.1 電容的頻率特性.................................................................................935.4.3 電容的介質和封裝影響.....................................................................955.4.3 電容并聯特性及反諧振.....................................................................955.4.4 如何選擇電容.....................................................................................975.4.5 電容的擺放及Layout ........................................................................99第六章 系統時序.................................................................................................1006.1 普通時序系統...........................................................................................1006.1.1 時序參數的確定...............................................................................1016.1.2 時序約束條件...................................................................................1063.2 高速設計的問題.......................................................................................2093.3 SPECCTRAQuest SI Expert 的組件.......................................................2103.3.1 SPECCTRAQuest Model Integrity .................................................2103.3.2 SPECCTRAQuest Floorplanner/Editor .........................................2153.3.3 constraint Manager .......................................................................2163.3.4 SigXplorer Expert Topology Development Environment .......2233.3.5 SigNoise 仿真子系統......................................................................2253.3.6 EMControl .........................................................................................2303.3.7 SPECCTRA Expert 自動布線器.......................................................2303.4 高速設計的大致流程...............................................................................2303.4.1 拓撲結構的探索...............................................................................2313.4.2 空間解決方案的探索.......................................................................2313.4.3 使用拓撲模板驅動設計...................................................................2313.4.4 時序驅動布局...................................................................................2323.4.5 以約束條件驅動設計.......................................................................2323.4.6 設計后分析.......................................................................................233第四章 SPECCTRAQUEST SIGNAL EXPLORER 的進階運用..........................................2344.1 SPECCTRAQuest Signal Explorer 的功能包括：................................2344.2 圖形化的拓撲結構探索...........................................................................2344.3 全面的信號完整性(Signal Integrity)分析.......................................2344.4 完全兼容 IBIS 模型...............................................................................2344.5 PCB 設計前和設計的拓撲結構提取.......................................................2354.6 仿真設置顧問...........................................................................................2354.7 改變設計的管理.......................................................................................2354.8 關鍵技術特點...........................................................................................2364.8.1 拓撲結構探索...................................................................................2364.8.2 SigWave 波形顯示器........................................................................2364.8.3 集成化的在線分析(Integration and In-process Analysis) .236第五章 部分特殊的運用...............................................................................2375.1 Script 指令的使用..................................................................................2375.2 差分信號的仿真.......................................................................................2435.3 眼圖模式的使用.......................................................................................249第四部分：HYPERLYNX 仿真工具使用指南............................................................251第一章 使用LINESIM 進行前仿真.......................................................................2511.1 用LineSim 進行仿真工作的基本方法...................................................2511.2 處理信號完整性原理圖的具體問題.......................................................2591.3 在LineSim 中如何對傳輸線進行設置...................................................2601.4 在LineSim 中模擬IC 元件.....................................................................2631.5 在LineSim 中進行串擾仿真...................................................................268第二章 使用BOARDSIM 進行后仿真......................................................................2732.1 用BOARDSIM 進行后仿真工作的基本方法...................................................2732.2 BoardSim 的進一步介紹..........................................................................2922.3 BoardSim 中的串擾仿真..........................................................................309
上傳時間： 2013-11-07
上傳用戶：aa7821634
ABAQUS is a general purpose finite element analysis program which is widely used to analyses mechanical, structure and civil engineering problems. Abaqus has some special feature for analysing fracture mechanics problems, and therefore it is a main tools for the FE-analysis in the Fracture Group at the Mechanical Engineering at Glasgow Universtity. The software which can transfer data from Abaqus into a Matlab readable environment has been developed as a part of a research program in constraint Estimation in Fracture Mechanics. This research program was funded by a grant from the Defence Research Agency through Prof. J. Sumpter.
標簽： analysis analyses general element
上傳時間： 2015-05-13
上傳用戶：xfbs821
This class implements the same API as the Java 1.3 java.util.TimerTask. * Note that a TimerTask can only be scheduled on one Timer at a time, but * that this implementation does not enforce that constraint.
標簽： TimerTask implements the class
上傳時間： 2015-06-10
上傳用戶：無聊來刷下
