Archive for July, 2009

links for 2009-07-30

July 31, 2009

links for 2009-07-28

July 29, 2009

links for 2009-07-25

July 26, 2009

links for 2009-07-22

July 23, 2009

links for 2009-07-21

July 22, 2009

links for 2009-07-20

July 21, 2009
  • <blockquote>
    <p>This guide presents the best practices in migration strategy and planning, migration tools, and practical migration examples. It is intended for technical staff involved in a MySQL to DB2 UDB conversion project.</p><p>This redbook also provides step-by-step instructions for installing and using the IBM DB2 Migration Toolkit (MTK) to port the database objects and data from MySQL to DB2 UDB.</p><p>Application programming and conversion considerations are discussed along with the differences in features and functionality of MySQL and DB2 UDB.</p><p>Examples are used throughout the book to illustrate conversions of database access, database administration, SQL statements (DDL, DML) and others, as well as testing and tuning your DB2 UDB system.</p>
  • <blockquote>
    With a little effort and political will, we could solve these problems. Companies could be required under fair practices law to allow your data to be released back to you with just a click so that you can erase your digital footprints or simply take your business (and data) elsewhere. They could also be held to the promises they make about content sold through the cloud: If they sell you an e-book, they can’t take it back or make it less functional later. To increase security, companies that keep their data in the cloud could adopt safer Internet communications and password practices, including the use of biometrics like fingerprints to validate identity.

links for 2009-07-19

July 20, 2009

links for 2009-07-18

July 19, 2009
  • <blockquote>
    Networks of coupled dynamical systems have been used to model … and many other self-organizing systems. Ordinarily, the connection topology is assumed to be either completely regular or completely random. But many biological, technological and social networks lie somewhere between these two extremes. Here we explore simple models of networks that can be tuned through this middle ground: regular networks 'rewired' to introduce increasing amounts of disorder. We find that these systems can be highly clustered, like regular lattices, yet have small characteristic path lengths, like random graphs. We call them 'small-world' networks, by analogy with the small-world phenomenon (popularly 6 degrees of separation. The neural network of the worm Caenorhabditis elegans, the power grid of the western United States, and the collaboration graph of film actors are shown to be small-world networks.

links for 2009-07-16

July 17, 2009

links for 2009-07-15

July 16, 2009