Archive for October, 2009

SOA Web Sites by Thomas Erl (and associates)


This collection of web site links for the SOA Books and associated materials.

Site Comments
What Is SOA A site with some good overview, and introductory concepts materials.
SOA Books This is a site which lists the SOA books Thomas Erl has had a hand in. All of the books are published by Prentice Hall
SOA Patterns This site has a list of the design patterns identified in SOA implementations. It is really a companion to the SOA Design Patterns Book. The detailed content on the is very brief, you probably need to have read the book to make use of the site.
SOA Principles This site has a list of the SOA Design Principles. It is a companion to the SOA Design Principles book. The detailed descriptions are quite brief, and reply on you having read the book.
SOA Glossary This could be a very useful glossary of SOA related terms. One of the big issues which introducing SOA will  always run into is the terms used in a SOA can have “overhanging” or “residual”meaning from other contexts. Having source for a glossary which you can use to standardise the language will be very useful.
SOA Posters Download Page

This page has two posters:

  • the SOA Principles poster. This poster is a good summary of the design principles.
  • the SOA Design Patterns Reference poster. A high level summary of the SOA design patterns. Again, a good “quick reference card” to the details of the pattern in the book.
SOA Methodology An introduction to a design and development methodology for SOA. Again, probably needs the book to really get more than a couple of quick tips from the site.
SOA Specifications A useful set of links to all (probably) the standards which are used in the SOA arena today. It makes a handy quick reference into the variety XML based standards used today.
SOA Schools Certification Want to become a SOA Certified Professions, here the place to start. I have no idea of the quality of what is offered, or the general acceptance of the Certifications which can be gained.
SOA in the US DoD Site dedicated to the implementation of SOA in the US DoD. The links to documents here may be helpful in SOA implementations in other large organisations.
SOA Magazine Magazine site, claims the current issue is 23. The link to find the past issues is at the bottom on the page (in fine print – not the easiest thing to spot).
WS-* Standards Reference Site with links to some of the WS-* Standards.

 


SOA Design Patterns

SOA Principles of Service Design

Web Service Contract Design and Versioning for SOA

Service-Oriented Architecture (SOA): Concepts, Technology, and Design

 

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Talking about Space shuttle successor completes crucial flight test – space – 28 October 2009 – New Scientist


Well done NASA. 

Quote:  Space shuttle successor completes crucial flight test – space – 28 October 2009 – New Scientist

The success of this test should help to silence the critics of the Ares program.

Whilst, I still believe that this is the wrong model for human space flight longer term. See NASA at a Crossroads. As a short term capability gap filler this "rocket stack" will have to do. Longer term, the model which is being developed in the private sector, may well prove to be the most useful.

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Food, Climate Change and Choices


Background

This post is prompted by a number of things coming together:

  • The diagram from the Times online Where’s the beef diagram? and this article Climate chief Lord Stern: give up meat to save the planet.
  • The Mythbusters show on Saturday, again cows and methane.
  • Methane is a much worse greenhouse gas than CO2 . (3 times as bad, but I’m probably wrong on the factor).
  • And a couple of little facts (or maybe assertions which need to be researched and proved )
    • North American Bison produce far less methane than cows,
    • Kangaroos (pound for pound) produce far less methane than cows or sheep.
    • Alpacas and Lamas (pound for pound) produce far less methane than cows or sheep.
  • Shellfish shells are made of Calcium Carbonate (CaCO3Wikipedia – Calcium Carbonate ) – That’s 3 CO (as in CO2 ) used making it.
  • Bioengineering is making progress in producing “red meat in a Petri dish”. Acceptance of this technology as a food source is probably the biggest hurdle confronting the introduction of the technology.

My Personal Preference

  • I love read meat. I’m NOT giving up having red meat in my diet to save the planet. Not that I eat red meat daily, but I do enjoy it when I do eat it.

Flaws in the arguments

  • The proposition that one must become a vegetarian to save the planet is obviously fallacious. There are other sources of red meat which do far less damage to the environment (methane production) than cows and sheep. Switching to these would allow anyone to remain omnivorous and ease the impact of a vital source of protein in the human diet on the environment.

Strategy to “save the planet” and keep red meat in your diet.

Start switching to lower methane red meat (kangaroo, buffalo/bison, lama, alpaca, and there are bound to be more), but do it gradually.

As the market economists will tell you. You will be sending a signal into the market that alternatives to beef are starting to gain greater acceptance in the market. The greater consumption of the non-beef red meat alternatives prompt producers to start switching to produce more of non-beef alternatives.

Start eating more shellfish like mussels or oysters. Once again maybe only once a week to start with. Again a gradual increase in consumption should prompt the cultivation of more of the shellfish. Throw the shells into the bin, they will end up being buried, and by burying the shells we storing some of those nasty CO’s in the ground, locked up for quite a while.

Actions Required Personally

  • In Australia eat kangaroo meat in preference to beef (once a week to start with).
  • In the US eat buffalo in preference to beef (once a week to start with).
  • Treat yourself to shellfish (mussels or oysters) (once a week to start with).

Conclusion

  • Red meat from cattle may well be a big source of methane, and methane is a very bad greenhouse gas.
  • There are alternatives to beef which can be produced from animals which produce significantly less methane than cattle.
  • Starting to switch way from beef, gradually, is possible today.
  • Increasing, or adding, shellfish to your diet will help reduce the quantity of greenhouse CO2  in the atmosphere.
  • Keep an open mind to trying “synthetic meat” when it becomes available.

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