d ice design and construct conditions
Unsteady flow in centrifugal pump at design and off design conditions
Ngày tải lên :
10/09/2015, 08:27
... twisted blades by using a three-dimensional Navier-Stokes code with a standard k-ε twoequation turbulence model at design point and off -design points The steady and unsteady numerically predicted ... condition At 0.7Qdesign, there is a significant flow reversal and stalled flow near leading edge shroud At 1.3Qdesign, the flow separation occurs on leading edge suction side and being carried downstream ... field development from leading edge to trailing edge can be captured completely Finally, unsteady flow field at impeller and volute exits at design and off -design flow rates will be studied in...
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EMBEDDED LINUX SYSTEM DESIGN AND DEVELOPMENT.pdf
Ngày tải lên :
04/08/2012, 14:23
... platform CE devices OEMs such as Sony and NEC are deploying Linux in DVDs, DVRs, and digital handsets 1.2 Why Embedded Linux? Any newcomer to the domain of embedded Linux is bound to be riddled with ... most embedded systems Embedded Linux System Design and Development Ⅲ The development and debugging environment in an embedded system is very different from a desktop computer Embedded systems ... the common problems are: Ⅲ Understand the embedded Linux development model Ⅲ Write, debug, and profile applications and drivers in embedded Linux Ⅲ Understand embedded Linux BSP architecture The...
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Design and Implement a SQL Server Database
Ngày tải lên :
25/08/2012, 09:00
... Status=ONLINE, Updateability=READ_WRITE, stored procedure sp_spaceused ví d sau USE Northwind Go sp_spaceused 'Customers' cho biết thông tin table Customer: name rows reserved data index_size unused ... d ng SQL Server database mà Một số Sytem objects thường d ng: System Stored Procedure Ứng d ng Sp_help ['object'] Cung cấp thông tin database object (table, view ) hay data type Sp_helpdb ['database'] ... Server d ng để ghi lại thay đổi xảy database Quá trình diễn sau: có thay đổi data Insert, Update, Delete yêu cầu từ ứng d ng, SQL Server tải (load) data page tương ứng lên memory (vùng nhớ gọi data...
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How to design and write web pages today
Ngày tải lên :
27/08/2012, 13:55
... writers and designers I am still grateful, many years later, to the first group of undergraduate students to whom I taught standards-based Web design in a multimedia writing course and to David Blakesley, ... construction of individual pages, including page elements such as branding, text and media content, and navigation • “Problems and Solutions” moves to the challenges surrounding construction and maintenance ... recent development in the more than 2,500-year-old tradition known as the art of rhetoric And it is rhetoric—not technology alone—that has informed and guided the writing and design advice in...
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The Design and Implementation of a Log-Structured File System
Ngày tải lên :
12/09/2012, 15:05
... the modified disk blocks written by Sprite LFS and Unix FFS when creating two single-block files named dir1/file1 and dir2/file2 Each system must write new data blocks and inodes for file1 and file2, ... Copy and Compact Threaded log Old log end New log end Old log end New log end Old data block New data block Previously deleted Figure — Possible free space management solutions for log-structured ... roll-forward updates the directory and/ or inode to complete the operation Roll-forward operations can cause entries to be added to or removed from directories and reference counts on inodes to be updated...
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Tài liệu CLUTCHES AND BRAKES Design and Selection
Ngày tải lên :
20/10/2012, 09:58
... Engineering Design: Second Edition, Revised and Expanded, Alexander Blake 70 An Introduction to the Design and Behavior of Bolted Joints: Second Edition, Revised and Expanded, John H Bickford 71 High ... 97 An lntroduction to the Design and Behavior of Bolted Joints: Third Edition, Revised and Expanded, John H Bickford 98 Shaft Alignment Handbook: Second Edition, Revised and Expanded, John Piotrowski ... Shells and Plates: Second Edition, Revised and Expanded, Werner Soedel 87 Steam Plant Calculations Manual: Second Edition, Revised and Expanded, V Ganapathy 88 Industrial Noise Control: Fundamentals...
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Six Sigma for Electronics Design and Manufacturing
Ngày tải lên :
07/02/2013, 09:47
... manipulations and variability reduction DoE 8.4.3 Trade-offs in new product design disciplines 8.4.4 New product design trade-off example— Screening DoE followed by in-depth DoE for defect elimination ... multiple competencies, including specialized engineering analysis and design validation, testing, and conformance to design standards for multiple countries or codes In addition, suppliers can offer ... interpret, document, and prioritize customer requirements to identify bottlenecks and breakthrough opportunities QFD is a market-driven design and development process resulting in products and services...
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Design and Controlof Workflow Processes
Ngày tải lên :
21/07/2013, 09:42
... adopted, such as the workflow net and the soundness notion The second issue addressed in this monograph is the design or redesign of a workflow Redesigning business processes has received wide ... flood of literature that arose on this subject Hammer and Champy (1993) subsequently stressed the extreme nature of redesign and additionally identified the intended outcome They promoted it ... conquered or abandoned, the preferred corporate and brand image, and the financial funding of the organization are not typically BPM issues The examples indicate a part of strategic decision...
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Design and development of major balance of plant components in solid oxide fuel cell system
Ngày tải lên :
05/09/2013, 16:10
... is dependent not only on the design and operating conditions of the fuel cell stack, but also on the design and operating conditions of the BOP components (e.g., the afterburner, reformer and ... temperature difference between the hot and cold gas streams at inlet and the temperature difference at the outlet end Figure compares the cold side absorbed heat and UA (the product of “U” and “A” ... calculated beforehand by using GCTool to conduct the SOFC system design and the optimal operating conditions between thermal components are revealed In the present study, the afterburner and all the...
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Optimization of design and operating parameters on the year round performance of a multi-stage evacuated solar desalination system using transient mathematical analysis
Ngày tải lên :
05/09/2013, 16:11
... model with that of [19] for cumulative distillate yield Results and discussion There are many design and operating parameters which affect the performance characteristics and distillate yield ... every hour and the hourly individual yield is summed up and the variation in cumulative distillate yield at every hour is calculated and it is shown in Figure 17 The cummulative yield after two ... yield and efficiency increasd from 24.344 kg/m2/day and 42.444 % at atmospheric pressure to 42.042 kg/m2/day and 76.44% at 0.02 bar respectively For saline water, it is found that yield and efficiency...
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Design and Implement a SQL Server Database
Ngày tải lên :
06/10/2013, 17:20
... Server d ng để ghi lại thay đổi xảy database Quá trình diễn sau: có thay đổi data Insert, Update, Delete yêu cầu từ ứng d ng, SQL Server tải (load) data page tương ứng lên memory (vùng nhớ gọi data ... system object thông d ng SQL Server database mà Một số Sytem objects thường d ng: System Stored Procedure Sp_help ['object'] Sp_helpdb ['database'] Ứng d ng Cung cấp thông tin database object (table, ... cấp thông tin khoảng trống sử d ng cho object Cho biết thông tin SQL Server user Ví d : sp_helpdb 'Northwind' cho kết có d ng bảng name db_size owner dbid created status ...
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Software Design and Development (A guide) is help you how to managed IT Project. Especially for Design and Develop software project.
Ngày tải lên :
15/10/2013, 23:13
... been added to the design ? How good is the design ? Could key software requirements be expanded if requested ? Does the design conform to standards ? Day - Software Design Reviewing the design ... produced and all have been tested Node F Node G Node H Node I Day - Definitions & Overview Node A Node B Node C Node D Node E Node F Node G G Development is completed & ready for deployment to validate ... Test plan doc Day - Definitions & Overview Software Life Cycle Node A Node B Node C Node D Node E Node F Node G Node H Node I Day - Definitions & Overview Node A Node B Node C Node D Node E A A...
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Module 3: Logical Design and Behavioral Design Patterns
Ngày tải lên :
19/10/2013, 02:15
... logical design validation step It confirms that the design is based on recurrent themes Module 3: Logical Design and Behavioral Design Patterns v Lab Strategy ! Lab 3: Logical Design and Behavioral ... behavioral design pattern is described in detail in Appendix B: “Additional Design Patterns used in Market Purchasing.” Design patterns are not limited to the patterns that are formalized in the design ... long as the student answers are justified and reflect the principles discussed in the module Discuss with students their answers to Lab Module 3: Logical Design and Behavioral Design Patterns...
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CCIE Fundamentals: Network Design and Case Studies
Ngày tải lên :
22/10/2013, 20:15
... periodic connections To reduce the need for dedicated circuits, a feature called dial-on-demand routing (DDR) is available Figure 2-8 illustrates a DDR connection Figure 2-8: The Dial-on-demand ... Layer addressing because Layer addresses are fixed with a device, whereas Layer addresses can be changed In addition, Layer addresses assume a flat address space with universally unique addresses ... processing and provide dedicated bandwidth to the desktop and to shared-media hubs Backbone routers are attached to either Fast Ethernet or ATM switches The increase in backbone bandwidth matches...
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EMBEDDED LINUX SYSTEM DESIGN AND DEVELOPMENT
Ngày tải lên :
23/10/2013, 15:15
... platform CE devices OEMs such as Sony and NEC are deploying Linux in DVDs, DVRs, and digital handsets 1.2 Why Embedded Linux? Any newcomer to the domain of embedded Linux is bound to be riddled with ... most embedded systems Embedded Linux System Design and Development Ⅲ The development and debugging environment in an embedded system is very different from a desktop computer Embedded systems ... the common problems are: Ⅲ Understand the embedded Linux development model Ⅲ Write, debug, and profile applications and drivers in embedded Linux Ⅲ Understand embedded Linux BSP architecture The...
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Real-Time Digital Signal Processing - Chapter 5: Design and Implementation of FIR Filters
Ngày tải lên :
23/10/2013, 22:15
... Passband and stopband deviations may be expressed in decibels The peak passband ripple, dp , and the minimum stopband attenuation, ds , in decibels are given as dp Ap 20 log10 dB À dp
5:1:6 ... passband and stopband ripples Therefore we must design the filter based on the smaller of the two ripples expressed as d min
dp , ds :
5:3:27 The designed filter will have passband and stopband ... width and the relative sidelobe level To ensure a fast transition from the passband to the stopband, the window should have a small mainlobe width On the other hand, to reduce the passband and...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme
Ngày tải lên :
27/10/2013, 23:15
... power-switching devices are presented These are: the Diode (the various types of diodes are presented and compared), the Bipolar Junction Transistor (BJT), the Metal Oxide Field-Effect Transistor (MOSFET) and ... encoder that sends down pulses that can be manipulated to calculate the speed and position of the rotor The encoder pulses and the measured currents drawn by the induction motor form the feedback ... along the direct axis is given by: isd = λdr ÷ kr (5.6) Where kt and kr are constants that depend on the stator and rotor’s resistance and inductance Having equations that are dependent on variables...
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Design and Simulation of A CMOS-MEMS Accelerometer
Ngày tải lên :
27/10/2013, 23:15
... 0.25V, and a bias current Idc of 100µA are used in design Hspice simulation shows a -3dB bandwidth of 98MHz with 1pF load, and an effective input capacitance of 2.5fF Diodes are used to provide dc ... 3.4.2.2 Diode Noises Biasing diodes introduce both shot noise and flicker noise As described in previous section, flicker noise is removed by modulation and demodulation Diode shot noise is modeled as ... charge, and hold capacitors Ch’s are floating During the Integrate phase, the difference of charges on Ci1 and Ci2 are integrated to Cf1 and Cf2, and the outputs are preamplified, sampled and held on...
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