Gas Turbine Theory by Henry Cohen, G. F. C. Rogers, H. I. H. SaravanamuttooGas Turbine Theory by Henry Cohen, G. F. C. Rogers, H. I. H. Saravanamuttoo

Gas Turbine Theory by Henry Cohen, G. F. C. Rogers, H. I. H. Saravanamuttoo

Since publication of the third edition of Gas Turbine Theory, the gas turbine has been found to be suitable for an increasing number of applications. The fourth edition of this popular textbook has been revised and updated to reflect these developments.

Gas turbines are becoming widely used for base-load electricity generation, as part of combined-cycle plant, and combined cycles receive more attention in this edition. There are now stringent statutory limits on harmful emissions, and the chapter on combustion has been enlarged to include a discussion of the factors affecting emissions and descriptions of current methods of attacking the problem. A section on coal gasification has also been added. Finally, the opportunity has been taken to make many small but significant improvements and additions to the text. The emphasis is still on fundamental principles, and readers must turn to the specialized literature for computational methods of dealing with the aerodynamic design of turbo machinery and the prediction of performance.
Suitable as a coursebook for undergraduate and graduate students of mechanical and aeronautical engineering,Gas Turbine Theory will also continue to be a valuable reference for practising gas turbine engineers.
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Who has a 3D mouse?

If you have one, what kind is it?  How long have you had it?  What do you like/dislike about it?  Would you recommend it?  Was it worth it?

If you don't have a 3D mouse, why?  Are you planning on getting one?  What is keeping you from getting one?  Price? Won't use it enough? Don't do 3D? What is your opinion about them?  Have you ever tried one?  Do you want to?

Who has a 3D mouse?

If you have one, what kind is it?  How long have you had it?  What do you like/dislike about it?  Would you recommend it?  Was it worth it?

If you don't have a 3D mouse, why?  Are you planning on getting one?  What is keeping you from getting one?  Price? Won't use it enough? Don't do 3D? What is your opinion about them?  Have you ever tried one?  Do you want to?

The new Autodesk Sustainable Design Center website is launching today!

On April 22, 2010, Earth Day, Autodesk will be launching a revised and updated Autodesk Sustainable Design Center website.  This new site is intended to provide a one-stop resource for their customers, employees, channel partners, press, analysts and anyone else that want to find the most current news about their (Autodesk’s) sustainability accomplishments.  This new site is intended to eliminate Autodesk’s annual sustainability report.  Anyone needed that type of information can go to the new website.

Some of the highlights of the new center will be:

1. Clean Tech Development
2. High Performance Buildings
3. Teaching Sustainable Design
4. Green Manufacturing
5. Greening Government
6. Sustainable Urban Development and Design
7. Green Consumer Products
8. Smart Utilities
9. Better Roads and Transportation
10. Green Vehicles

Autodesk’s purpose in reworking this site is to help individuals and groups that need the tools to work towards sustainability in their design process have what they need from Autodesk to do so.  Over the past few years Autodesk has made a highly visible effort to provide tools relating to sustainability in design.  It’s a perfect match if you think about it.  Most of what civilization comes in contact with these days is and must be designed.  Autodesk has had a hand in design our world for over 25 years now.  To keep the world going and Autodesk going, they need to provide efficiently working tools, and tools that allow us to design efficient creations.

Why should any of use this site and how is it going to be different from the report?  It’s hard to say right now because the new site won’t be available to me while I’m writing this, BUT it should provide more up to date information via the web.  We won’t have to wait on the report.  Also, when I go to purchase design software I will be able to make a better informed decision.  IF I wanted to invest in Autodesk, this site will have relevant data on Autodesk’s carbon footprint, and other similar information.  Also, there will be sources of information on sustainable design, so anyone that is considering a journey down that path, they can go here for some basic data.

The link to the link hasn’t changed, it is still:  www.autodesk.com/sustainabledesign

There are other links from the site that might also interest you.  They are:

Autodesk Carbon Footprint 

Green Leader Perspectives 


Sustainable Design Resources

Teaching Sustainable Design 

Check out the site.  I’m sure it will be very useful.

The new Autodesk Sustainable Design Center website is launching today!

On April 22, 2010, Earth Day, Autodesk will be launching a revised and updated Autodesk Sustainable Design Center website.  This new site is intended to provide a one-stop resource for their customers, employees, channel partners, press, analysts and anyone else that want to find the most current news about their (Autodesk’s) sustainability accomplishments.  This new site is intended to eliminate Autodesk’s annual sustainability report.  Anyone needed that type of information can go to the new website.

Some of the highlights of the new center will be:

1. Clean Tech Development
2. High Performance Buildings
3. Teaching Sustainable Design
4. Green Manufacturing
5. Greening Government
6. Sustainable Urban Development and Design
7. Green Consumer Products
8. Smart Utilities
9. Better Roads and Transportation
10. Green Vehicles

Autodesk’s purpose in reworking this site is to help individuals and groups that need the tools to work towards sustainability in their design process have what they need from Autodesk to do so.  Over the past few years Autodesk has made a highly visible effort to provide tools relating to sustainability in design.  It’s a perfect match if you think about it.  Most of what civilization comes in contact with these days is and must be designed.  Autodesk has had a hand in design our world for over 25 years now.  To keep the world going and Autodesk going, they need to provide efficiently working tools, and tools that allow us to design efficient creations.

Why should any of use this site and how is it going to be different from the report?  It’s hard to say right now because the new site won’t be available to me while I’m writing this, BUT it should provide more up to date information via the web.  We won’t have to wait on the report.  Also, when I go to purchase design software I will be able to make a better informed decision.  IF I wanted to invest in Autodesk, this site will have relevant data on Autodesk’s carbon footprint, and other similar information.  Also, there will be sources of information on sustainable design, so anyone that is considering a journey down that path, they can go here for some basic data.

The link to the link hasn’t changed, it is still:  www.autodesk.com/sustainabledesign

There are other links from the site that might also interest you.  They are:

Autodesk Carbon Footprint 

Green Leader Perspectives 


Sustainable Design Resources

Teaching Sustainable Design 

Check out the site.  I’m sure it will be very useful.

Autodesk Labs Introduces Project Snap

Autodesk Labs is one of my favorite places to go.  If you have never been there, or it’s been a long time, then go back.  There are many projects there to take a look at.

The most recently added project is Project Snap.  According to the Labs website, Project Snap is a “unified browse and search platform” for Autodesk products.  Right now it is only working for AutoCAD 2010 and AutoCAD 2011.  They have plans to eventually extend it Revit and Inventor.  It might work on AutoCAD Verticals (Like Map, and Mechanical) but the site doesn’t say.  I’ve downloaded it and will be trying it out.

Snap is meant to search through the meta data that is already stored in CAD files.  You can search for files created by certain users, by date, and by other information.  It works similar to the Design Center tool in AutoCAD, only it can index the objects and you can search for them.  Once installed, users add project folders to Snap’s list of places to browse.  Once added, users can search for items and load them into their current file.  You can also save searches for later use.

In order for the search abilities to work well, users are going to have enter more meta data into their files.  Autodesk wants us to add such data to the drawing properties.  You might be doing this already, but if you want to implement Snap, you are going to have to add more.  It is easy enough to do, but some sort of standard for your company may have to be worked out.

Not only can you search and insert objects form other files, but you can take a Snapshot of your current file while you work in it.  This keeps a milestone record of your design.  The Snapshot is saved as a sort of transmittal.  This allows you to go back and view the milestone.  It’s unclear what you can do with that snap shot at this moment.  Can I revert the file to that state?  I don’t know.  Once we try it out I can tell you.

Project Snap has a lot of promise.  We all know how difficult it is to find what you need in other CAD files.  Many companies have resorted to creating and maintaining large block libraries over the years.  You can still do that with Snap, but maybe it will help us a bit.  Time will tell.  Are you going to try it out?

Here is an overview video of the application:

Here is a demonstration video of some of the key features in Project Snap:

Autodesk Labs Introduces Project Snap

Autodesk Labs is one of my favorite places to go.  If you have never been there, or it’s been a long time, then go back.  There are many projects there to take a look at.

The most recently added project is Project Snap.  According to the Labs website, Project Snap is a “unified browse and search platform” for Autodesk products.  Right now it is only working for AutoCAD 2010 and AutoCAD 2011.  They have plans to eventually extend it Revit and Inventor.  It might work on AutoCAD Verticals (Like Map, and Mechanical) but the site doesn’t say.  I’ve downloaded it and will be trying it out.

Snap is meant to search through the meta data that is already stored in CAD files.  You can search for files created by certain users, by date, and by other information.  It works similar to the Design Center tool in AutoCAD, only it can index the objects and you can search for them.  Once installed, users add project folders to Snap’s list of places to browse.  Once added, users can search for items and load them into their current file.  You can also save searches for later use.

In order for the search abilities to work well, users are going to have enter more meta data into their files.  Autodesk wants us to add such data to the drawing properties.  You might be doing this already, but if you want to implement Snap, you are going to have to add more.  It is easy enough to do, but some sort of standard for your company may have to be worked out.

Not only can you search and insert objects form other files, but you can take a Snapshot of your current file while you work in it.  This keeps a milestone record of your design.  The Snapshot is saved as a sort of transmittal.  This allows you to go back and view the milestone.  It’s unclear what you can do with that snap shot at this moment.  Can I revert the file to that state?  I don’t know.  Once we try it out I can tell you.

Project Snap has a lot of promise.  We all know how difficult it is to find what you need in other CAD files.  Many companies have resorted to creating and maintaining large block libraries over the years.  You can still do that with Snap, but maybe it will help us a bit.  Time will tell.  Are you going to try it out?

Here is an overview video of the application:

Here is a demonstration video of some of the key features in Project Snap:

AutoCAD Bonus Tool MDITabs Works on AutoCAD 2011

The free MDITabs Bonus Tools from Autodesk , as reported by Shaan Hurley, Autodesk Blogger of Between The Lines, will work with AutoCAD 2011!  I've used this tool in the past and just might download it again, now that it seems to work with 2011.

Go on over to his site to check it out and to download it.

Between The Lines

Thanks Shaan for trying it out for us.

AutoCAD Bonus Tool MDITabs Works on AutoCAD 2011

The free MDITabs Bonus Tools from Autodesk , as reported by Shaan Hurley, Autodesk Blogger of Between The Lines, will work with AutoCAD 2011!  I've used this tool in the past and just might download it again, now that it seems to work with 2011.

Go on over to his site to check it out and to download it.

Between The Lines

Thanks Shaan for trying it out for us.

Autodesk Assistance Program Offers Increased Discount on Inventor for Employers

Autodesk Assistance Program Offers Increased Discount on Inventor for Employers

Here is a copy of their press release announcing this new offer:

--------------------------------------------------------------------------------------------------------------------------------------------------------------------

Program Participants with Autodesk Inventor Certification and Graduates Can Turn Their Student License into a Full Commercial Version for a Fraction of the Cost

 

SAN RAFAEL, Calif., April 21, 2010—Autodesk, Inc. (NASDAQ: ADSK), a world leader in 2D and 3D design and engineering technologies, today announced a new initiative to provide competitive advantage to displaced workers participating in the Autodesk Assistance Program (AAP) and recent graduates entering the workforce. 

 

AAP Participants who have completed Autodesk Inventor certification and downloaded a student license of Autodesk Inventor software can now bring that license to a new job, at a fraction of the cost to their employer. Employers hiring Autodesk Inventor certified designers and engineers registered in the AAP program can convert their student license of Autodesk Inventor to a full commercial seat, all for the price of subscription and a minimal processing fee, a saving of up to 85 percent over the commercial price. Employers also receive a 25 percent discount on 16 additional products offered through the Autodesk Assistance Program.

 

Autodesk is also offering the same upgrade program for Inventor Certified students.  Postsecondary graduates who have used free* downloads of Inventor by virtue of limited-time student licenses can now take that expertise with them to their commercial employer.

 

”With Autodesk Inventor software and training of displaced workers and students, employers have access to both skilled workers and less expensive software,” said Tom Cameron, vice president of Americas manufacturing sales at Autodesk. “This is a win-win solution that delivers the digital prototyping advantage through Autodesk Inventor and enabling the design and building of better products in less time.”

 

“The student-to-commercial license promotion is mutually beneficial to both graduates seeking jobs and employers looking for qualified candidates,” said Joe Astroth, PhD., Autodesk Chief Education Officer. “Being able to directly transition from campus design labs, studios and classrooms into the workforce gives Inventor users a significant advantage. Being able to move those experienced users into positions without having to purchase new licenses is very attractive, particularly in the current economy.”

 

The Autodesk Assistance Program currently has more than 15,000 participants worldwide, and was designed to help displaced workers in the architecture, engineering, design and manufacturing industries maintain and develop their 3D design technology skills, and improve their job prospects in a difficult economy.   

 

In a recent survey of Autodesk Assistance Program participants, 75 percent of respondents say employers view software skills as one of the most critical assets in a new employee, second only to experience.  In addition, many respondents felt updating their software skills would get more job interviews.

 

For more information about the Autodesk Assistance Program, contact your local reseller or contact Autodesk directly at assistance@autodesk.com, or visit www.autodesk.com/assistanceprogram.

 

About Autodesk

Autodesk, Inc., is a world leader in 2D and 3D design, engineering and entertainment software for the manufacturing, building and construction, and media and entertainment markets. Since its introduction of AutoCAD software in 1982, Autodesk continues to develop the broadest portfolio of state-of-the-art software to help customers experience their ideas digitally before they are built. Fortune 100 companies ¾ as well as the last 15 Academy Award winners for Best Visual Effects ¾ use Autodesk software tools to design, visualize and simulate their ideas to save time and money, enhance quality, and foster innovation for competitive advantage. For additional information about Autodesk, visit www.autodesk.com.

--------------------------------------------------------------------------------------------------------------------------------------------------------------------

This means that if you were a member of the Inventor Student Community, download Inventor Student, finished the program, you are eligible for a reward, and so is your new employer!  Your license of Inventor will give you an 85% saving!  that's a pretty good deal on a fee that is, well, very high.  Make sure to put that on your resume, or at least your cover letter, when you go and interview for a job.

Autodesk Assistance Program Offers Increased Discount on Inventor for Employers

Autodesk Assistance Program Offers Increased Discount on Inventor for Employers

Here is a copy of their press release announcing this new offer:

--------------------------------------------------------------------------------------------------------------------------------------------------------------------

Program Participants with Autodesk Inventor Certification and Graduates Can Turn Their Student License into a Full Commercial Version for a Fraction of the Cost

 

SAN RAFAEL, Calif., April 21, 2010—Autodesk, Inc. (NASDAQ: ADSK), a world leader in 2D and 3D design and engineering technologies, today announced a new initiative to provide competitive advantage to displaced workers participating in the Autodesk Assistance Program (AAP) and recent graduates entering the workforce. 

 

AAP Participants who have completed Autodesk Inventor certification and downloaded a student license of Autodesk Inventor software can now bring that license to a new job, at a fraction of the cost to their employer. Employers hiring Autodesk Inventor certified designers and engineers registered in the AAP program can convert their student license of Autodesk Inventor to a full commercial seat, all for the price of subscription and a minimal processing fee, a saving of up to 85 percent over the commercial price. Employers also receive a 25 percent discount on 16 additional products offered through the Autodesk Assistance Program.

 

Autodesk is also offering the same upgrade program for Inventor Certified students.  Postsecondary graduates who have used free* downloads of Inventor by virtue of limited-time student licenses can now take that expertise with them to their commercial employer.

 

”With Autodesk Inventor software and training of displaced workers and students, employers have access to both skilled workers and less expensive software,” said Tom Cameron, vice president of Americas manufacturing sales at Autodesk. “This is a win-win solution that delivers the digital prototyping advantage through Autodesk Inventor and enabling the design and building of better products in less time.”

 

“The student-to-commercial license promotion is mutually beneficial to both graduates seeking jobs and employers looking for qualified candidates,” said Joe Astroth, PhD., Autodesk Chief Education Officer. “Being able to directly transition from campus design labs, studios and classrooms into the workforce gives Inventor users a significant advantage. Being able to move those experienced users into positions without having to purchase new licenses is very attractive, particularly in the current economy.”

 

The Autodesk Assistance Program currently has more than 15,000 participants worldwide, and was designed to help displaced workers in the architecture, engineering, design and manufacturing industries maintain and develop their 3D design technology skills, and improve their job prospects in a difficult economy.   

 

In a recent survey of Autodesk Assistance Program participants, 75 percent of respondents say employers view software skills as one of the most critical assets in a new employee, second only to experience.  In addition, many respondents felt updating their software skills would get more job interviews.

 

For more information about the Autodesk Assistance Program, contact your local reseller or contact Autodesk directly at assistance@autodesk.com, or visit www.autodesk.com/assistanceprogram.

 

About Autodesk

Autodesk, Inc., is a world leader in 2D and 3D design, engineering and entertainment software for the manufacturing, building and construction, and media and entertainment markets. Since its introduction of AutoCAD software in 1982, Autodesk continues to develop the broadest portfolio of state-of-the-art software to help customers experience their ideas digitally before they are built. Fortune 100 companies ¾ as well as the last 15 Academy Award winners for Best Visual Effects ¾ use Autodesk software tools to design, visualize and simulate their ideas to save time and money, enhance quality, and foster innovation for competitive advantage. For additional information about Autodesk, visit www.autodesk.com.

--------------------------------------------------------------------------------------------------------------------------------------------------------------------

This means that if you were a member of the Inventor Student Community, download Inventor Student, finished the program, you are eligible for a reward, and so is your new employer!  Your license of Inventor will give you an 85% saving!  that's a pretty good deal on a fee that is, well, very high.  Make sure to put that on your resume, or at least your cover letter, when you go and interview for a job.

Logic Synthesis for FSM-Based Control Units (Lecture Notes in Electrical Engineering)Logic Synthesis for FSM-Based Control Units (Lecture Notes in Electrical Engineering)

Logic Synthesis for FSM-Based Control Units (Lecture Notes in Electrical Engineering)

 Springer; 1 edition (September 29, 2009) | ISBN: 3642043089 | 236 pages | PDF | 2 MB


The control unit is one of the most important parts of any digital system responsible for interplay of other system blocks. Very often, the model of a finite state machine (FSM) is used to represent the behaviour of a control unit. Modern computer-aided design tools include a lot of optimal solutions (library cells) for implementation of such regular blocks of digital systems as decoders, multiplexers, parallel multibit adders and so on. But as a rule, control units have an irregular structure which makes impossible to design their logic circuits using the standard library cells. To use these cells, an FSM can be represented by a multilevel model based on the principle of structural decomposition. In multilevel models, for example, multiplexers are used to replace logical conditions, decoders are used to implement microoperations, and different memory blocks are used to transform object codes.



Design methods depend strongly on such factors as an FSM model in use, specific features of logic elements implementing its logic circuit, characteristics of a control algorithm to be interpreted. In the case of Moore FSM, optimization methods are based on existence of the classes of pseudoequivalent states. Their use permits to compress the transition table of Moore FSM till the size of the table for equivalent Mealy FSM. In the case of Mealy FSM, optimization methods are based on transformation of either object codes, or interpreted graph-schemes of algorithm. In the case of CPLD, the hardware decrease can be achieved using more than single source of state codes. In the case of FPGA, the structural decomposition allows using embedded memory blocks for implementation of decoding logic. In case of ASIC, design methods target on minimization of the chip area occupied by an FSM circuit. It can be achieved due to use of different encoding methods, where both internal states and collections of microoperations can be encoded. If a control algorithm is a linear one, then a state register of Moore FSM can be replaced by a counter. It leads to simplification of the input memory functions and, in turns, to the hardware amount decrease. The book includes a lot of design methods targeted on logic synthesis of both Mealy and Moore FSMs, where their logic circuits can be implemented using ASIC, as well as CPLD or FPGA. The most of discussed methods belong to the authors of this book.



This book will be interesting and useful for students and postgraduates in the area of Computer Science, as well as for designers of digital systems included complex control units. Proposed models and design methods open new possibilities for creating logic circuits of control units with optimal hardware amount.
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AutoCAD Exchange - What's New This Week

Here is what is new this week on AutoCAD Exchange.

  Ask the Expert: Waheed Akhtar

Waheed Akhtar is a Senior CAD Technician at McCormick Rankin Corporation. He has more than 15 years experience with AutoCAD, working on various projects that include tunnels and roads, bridges, canals and related structures, and buildings.
He specializes in the creation of new line types and hatch patterns, 3D drawing, digitizing, and CAD standards.

On the Home Page

New Series:

Ged Trias: Biography

Ged Trias is the Associate Director of Design at the Larson Darby Group, based in Rockford, Illinois. Here, Ged explains what his company does, and how long he's been using AutoCAD.

On YouTube: http://www.youtube.com/watch?v=iuaWLW55I8Q

Ged Trias: Subscription Benefits

Ged Trias talks about his favorite features of the Autodesk Subscription Program and how it can save his company money.

New Videos: http://www.youtube.com/watch?v=VVyPLE_G3Go

AutoCAD 2011: Create and Edit 2D Objects

Many operations in AutoCAD can be done directly with the mouse, or by using tools in the user interface and following prompts. This video demonstrates how to create, view, and modify 2D objects in a drawing.

On YouTube: http://www.youtube.com/watch?v=IKUefrZrYts

AutoCAD: David Cohn - Realistic Lighting

David Cohn talks to Heidi Hewett about adding realistic lighting to AutoCAD visualizations.

On YouTube: http://www.youtube.com/watch?v=4XbIVFQ_BL0

AutoCAD: Deni Cox - Tech Questions - Layout Tab

Deni Cox of CAD-1 talks about the questions she receives as a Technical Specialist, and how she fields questions about the Layout Tab.

On YouTube: http://www.youtube.com/watch?v=4Gt899ha1qM

AutoCAD: Donnie Gladfelter - Restore Reset

Heidi Hewett of Autodesk talks to CAD consultant Donnie Gladfelter about how important it is to experiment with AutoCAD and customize the user interface. He also shares a tip for what to do if you need to undo a customization.

On YouTube: http://www.youtube.com/watch?v=cVsh3nKZRPw

AutoCAD Exchange - What's New This Week

Here is what is new this week on AutoCAD Exchange.

  Ask the Expert: Waheed Akhtar

Waheed Akhtar is a Senior CAD Technician at McCormick Rankin Corporation. He has more than 15 years experience with AutoCAD, working on various projects that include tunnels and roads, bridges, canals and related structures, and buildings.
He specializes in the creation of new line types and hatch patterns, 3D drawing, digitizing, and CAD standards.

On the Home Page

New Series:

Ged Trias: Biography

Ged Trias is the Associate Director of Design at the Larson Darby Group, based in Rockford, Illinois. Here, Ged explains what his company does, and how long he's been using AutoCAD.

On YouTube: http://www.youtube.com/watch?v=iuaWLW55I8Q

Ged Trias: Subscription Benefits

Ged Trias talks about his favorite features of the Autodesk Subscription Program and how it can save his company money.

New Videos: http://www.youtube.com/watch?v=VVyPLE_G3Go

AutoCAD 2011: Create and Edit 2D Objects

Many operations in AutoCAD can be done directly with the mouse, or by using tools in the user interface and following prompts. This video demonstrates how to create, view, and modify 2D objects in a drawing.

On YouTube: http://www.youtube.com/watch?v=IKUefrZrYts

AutoCAD: David Cohn - Realistic Lighting

David Cohn talks to Heidi Hewett about adding realistic lighting to AutoCAD visualizations.

On YouTube: http://www.youtube.com/watch?v=4XbIVFQ_BL0

AutoCAD: Deni Cox - Tech Questions - Layout Tab

Deni Cox of CAD-1 talks about the questions she receives as a Technical Specialist, and how she fields questions about the Layout Tab.

On YouTube: http://www.youtube.com/watch?v=4Gt899ha1qM

AutoCAD: Donnie Gladfelter - Restore Reset

Heidi Hewett of Autodesk talks to CAD consultant Donnie Gladfelter about how important it is to experiment with AutoCAD and customize the user interface. He also shares a tip for what to do if you need to undo a customization.

On YouTube: http://www.youtube.com/watch?v=cVsh3nKZRPw

Strength of Materials Fourth Edition by Pytel and Singer (Solutions 1-5 chap)

Strength of Materials Fourth Edition by Pytel and Singer (Solutions 1-5 chap)

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Foundations for Microwave Engineering by Robert E. Collin

Foundations for Microwave Engineering by Robert E. Collin

 Wiley-IEEE Press | 2000 | ISBN: 0780360311 | 944 pages | PDF | 10,1 MB
"FOUNDATIONS FOR MICROWAVE ENGINEERING, Second Edition, covers the major topics of microwave engineering. Its presentation defines the accepted standard for both advanced undergraduate and graduate level courses on microwave engineering. An essential reference book for the practicing microwave engineer, it features:
* Planar transmission lines, as well as an appendix that describes in detail conformal mapping methods for their analysis and attenuation characteristics
* Small aperture coupling and its application in practical components such as directional couplers and cavity coupling
* Printed circuit components with an emphasis on techniques such as even and odd mode analysis and the use of symmetry properties
* Microwave linear amplifier and oscillator design using solid-state circuits such as varactor devices and transistors
FOUNDATIONS FOR MICROWAVE ENGINEERING, Second Edition, has extensive coverage of transmission lines, waveguides, microwave circuit theory, impedance matching and cavity resonators. It devotes an entire chapter to fundamental microwave tubes, in addition to chapters on periodic structures, microwave filters, small signal solid-state microwave amplifier and oscillator design, and negative resistance devices and circuits. Completely updated in 1992, it is being reissued by the IEEE Press in response to requests from our many members, who found it an invaluable textbook and an enduring reference for practicing microwave engineers.
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Integrated Electronics By Millman & halkias

Integrated Electronics By Millman & halkias

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Revit team leader/co-ordinator

Thought you might be interested in this career opportunity that Kevin from UberCAD passed onto me. If you are looking to take your Revit and BIM skills to the next level, be sure to drop Kevin an email.

Global player with global opportunities.

We are looking for an ambitious Revit boffin. Initially you will be co-ordinating an existing multi-disciplinary Revit team and have responsibility for assembling the Revit model for a major £200m project.

Beyond that, as one of the most valuable Revit experts within this major international multi-disciplinary company, there are opportunities to work on major projects all over the world or you could chose a more strategic role in the UK. Either way this company will invest in keeping you at the forefront of BIM.

Please call Kevin Johnson on (+44) 01275 349000 or

email: kevin@uberCAD.com

What's New in AutoCAD 2011 - In Detail - Part 1

AutoCAD 2011 is out and it has been given several updates.  It seems that recent new AutoCAD releases have had, generally speaking, two major new features added to it.  AutoCAD 2010 had mesh modeling and parametric constraints added to it.  AutoCAD 2009 had the Ribbon and the Action Recorder, though, the Action Recorder has a lot of potential, many users consider it a bust (I don’t, I think it’s great).  Perhaps the same goes for the ribbon as well.  Face it, CAD users don’t like change.  Every release with a major change has had more than its fair share of gripes and groans.

AutoCAD 2011 has two major updates, surface modeling, and a culmination of document tools.  There really isn’t one major new documentation feature (except maybe the transparency setting that is now available,) but instead there are several additions and tweaks that separately are weak, but together make AutoCAD 2011 the best AutoCAD yet!


This is the first article in a series that will closely look at the new features.  I don’t want to give a list of what’s new, but instead, I want to go in-depth and show you each new enhancement.  Some of the articles will cover one new item while others will look at several.  Some new features may even span more than one article.  If you haven’t installed your copy of AutoCAD 2011 yet, do so now.  As a CAD user of over 17 years, this latest release really has me smiling.  Yes I’m an AutoCAD fanboy, but just wait.  Even if you aren’t into the heavy features of AutoCAD (then shame on you for not using the tools you have paid for) you are still going to love the “little things” that are in AutoCAD 2011.

AutoCAD 2011 background & grid are different

Let’s get started.  One of the very first things you may notice in AutoCAD 2011 is the background color.  Yet again Autodesk has seen it fit to change the color, though this time it is more subtle.  It is now a dark gray.  I don’t know why they insist on changing it almost every release, but they do.  It’s ok really, because it is easy enough to change to whatever color you want.  I have a post (click here) that describes the process.  The post is for AutoCAD 2009, but the process is the same for AutoCAD 2011.

Another thing you are going to notice is that there is an actual grid when you turn the grid display feature on!  Out of the box it is on.  Also notice the UCS Icon, it too looks different.  No more cones at the ends, just lines, one for the X Axis and one for the Y Axis.  The grid is colored green on the Y Axis and red on the X Axis.  This is nice because it helps them to stand out, I guess.  This makes the background look more like old fashioned graph paper.  Funny how over the years there have been more and more items in AutoCAD to make its drawings look more “hand drawn” than before.

And since we are on the UCS Icon, the 3D Gizmos have been tweaked a bit too.  Each one is a bit more distinct so that it is easier to tell them apart.  They are also more consistent with their functions.  The axis colors match the UCS icon, and each gizmo looks much more different from the others.  They are still easy to use, go to the Ribbon (in the 3D Modeling Workspace), Home Tab, Subobject Panel.  Expand it, and go to the Gizmo Command.  Select which Gizmo you want to use, now select a 3D object.  The gizmo you picked should pop up.  If not, select the object first, then pick the Gizmo.  Keep the object selected, now pick a different Gizmo, it changes.  If you need to switch between Gizmos, it’s easy.  Just pick the one you want.

The 3D Gizmos

One more highly visible change is in the navigation tools.  By default, there is now a Navigation Bar tool.  This bar has some of the most frequently used navigation tools in it.  It has:  Steering Wheel, View Cube, ShowMotion, Pan, Zoom, and Orbit.  These items used to be in the status bar; they aren’t anymore.  You can turn the navigation bar off and on if it gets in your way.  You can dock the Navigation Bar on the top, bottom, left or right side of the drawing window.  You can also control what navigation tools are displayed.  To change the nav bar, click on the arrow at the bottom of the navigation bar.  This brings up the settings dialog box.  You can also control which version of each command is visible.  Pick which Zoom Command you want to use, though all are available.  The same goes with the orbit command as well as the other tools.  The ViewCube has been enhanced to support the 2D Wireframe view style.  This allows you to rotate your viewport on a two dimensional plane.  One last thing, if you are using a 3D Connexion device, controls for it will show up in the Navigation Bar.

The new Navigation Bar

That’s it for now.  We will get into the other new features and enhancements in later posts.  What have you used so far?  What do you like or dislike about AutoCAD 2011?

Happy Cadding

What's New in AutoCAD 2011 - In Detail - Part 1

AutoCAD 2011 is out and it has been given several updates.  It seems that recent new AutoCAD releases have had, generally speaking, two major new features added to it.  AutoCAD 2010 had mesh modeling and parametric constraints added to it.  AutoCAD 2009 had the Ribbon and the Action Recorder, though, the Action Recorder has a lot of potential, many users consider it a bust (I don’t, I think it’s great).  Perhaps the same goes for the ribbon as well.  Face it, CAD users don’t like change.  Every release with a major change has had more than its fair share of gripes and groans.

AutoCAD 2011 has two major updates, surface modeling, and a culmination of document tools.  There really isn’t one major new documentation feature (except maybe the transparency setting that is now available,) but instead there are several additions and tweaks that separately are weak, but together make AutoCAD 2011 the best AutoCAD yet!


This is the first article in a series that will closely look at the new features.  I don’t want to give a list of what’s new, but instead, I want to go in-depth and show you each new enhancement.  Some of the articles will cover one new item while others will look at several.  Some new features may even span more than one article.  If you haven’t installed your copy of AutoCAD 2011 yet, do so now.  As a CAD user of over 17 years, this latest release really has me smiling.  Yes I’m an AutoCAD fanboy, but just wait.  Even if you aren’t into the heavy features of AutoCAD (then shame on you for not using the tools you have paid for) you are still going to love the “little things” that are in AutoCAD 2011.

AutoCAD 2011 background & grid are different

Let’s get started.  One of the very first things you may notice in AutoCAD 2011 is the background color.  Yet again Autodesk has seen it fit to change the color, though this time it is more subtle.  It is now a dark gray.  I don’t know why they insist on changing it almost every release, but they do.  It’s ok really, because it is easy enough to change to whatever color you want.  I have a post (click here) that describes the process.  The post is for AutoCAD 2009, but the process is the same for AutoCAD 2011.

Another thing you are going to notice is that there is an actual grid when you turn the grid display feature on!  Out of the box it is on.  Also notice the UCS Icon, it too looks different.  No more cones at the ends, just lines, one for the X Axis and one for the Y Axis.  The grid is colored green on the Y Axis and red on the X Axis.  This is nice because it helps them to stand out, I guess.  This makes the background look more like old fashioned graph paper.  Funny how over the years there have been more and more items in AutoCAD to make its drawings look more “hand drawn” than before.

And since we are on the UCS Icon, the 3D Gizmos have been tweaked a bit too.  Each one is a bit more distinct so that it is easier to tell them apart.  They are also more consistent with their functions.  The axis colors match the UCS icon, and each gizmo looks much more different from the others.  They are still easy to use, go to the Ribbon (in the 3D Modeling Workspace), Home Tab, Subobject Panel.  Expand it, and go to the Gizmo Command.  Select which Gizmo you want to use, now select a 3D object.  The gizmo you picked should pop up.  If not, select the object first, then pick the Gizmo.  Keep the object selected, now pick a different Gizmo, it changes.  If you need to switch between Gizmos, it’s easy.  Just pick the one you want.

The 3D Gizmos

One more highly visible change is in the navigation tools.  By default, there is now a Navigation Bar tool.  This bar has some of the most frequently used navigation tools in it.  It has:  Steering Wheel, View Cube, ShowMotion, Pan, Zoom, and Orbit.  These items used to be in the status bar; they aren’t anymore.  You can turn the navigation bar off and on if it gets in your way.  You can dock the Navigation Bar on the top, bottom, left or right side of the drawing window.  You can also control what navigation tools are displayed.  To change the nav bar, click on the arrow at the bottom of the navigation bar.  This brings up the settings dialog box.  You can also control which version of each command is visible.  Pick which Zoom Command you want to use, though all are available.  The same goes with the orbit command as well as the other tools.  The ViewCube has been enhanced to support the 2D Wireframe view style.  This allows you to rotate your viewport on a two dimensional plane.  One last thing, if you are using a 3D Connexion device, controls for it will show up in the Navigation Bar.

The new Navigation Bar

That’s it for now.  We will get into the other new features and enhancements in later posts.  What have you used so far?  What do you like or dislike about AutoCAD 2011?

Happy Cadding