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Meanwhile it’s the tenth and final day of our big urbex road trip that we made in February. After several explorations in Luxembourg, France and Belgium we’re finally back in Germany where we spent the night on a tank graveyard. This former military training area is now a habitat for endangered flora and fauna. Until some years ago soldiers learned here how to capture these steel monstrosities - today nature is retaking control of the abandoned tanks.
Kirstjen Nielsen, Secretary of Homeland Security of the United States speaking during the Session "Hack the Attack" at the Annual Meeting 2018 of the World Economic Forum in Davos, January 24, 2018
Copyright by World Economic Forum / Sandra Blaser
© by Wil Wardle. Please do not use this or any of my images without my permission.
Please click "L" on your keyboard to view on Black, you know it looks better.
Taking up a suggestion for an experiment by Peter de Waal I decided to try it using a 75mm f4.5 Ensar (triplet) in the Ensign Carbine No.7 that I had previously used with a 65mm f6.8 Angulon.
The vignetting shows the limits of coverage of the 'over-driven' Ensar triplet, on a negative that is actually 80mm wide.
[The (1930s, uncoated) Ensar is soft anyway, but I have chosen a home scan for this, as the processors' scan, with better colour rendition, did not quite cover the full width of the negative.]
Hacker's Delight is a software algorithm book by Henry S. Warren, Jr. and published by Addison-Wesley Professional. The first edition was released in 2002, and the second in 2013. It discusses a variety of programming algorithms for common tasks involving integer types, often with the aim of performing the minimum number of operations or replacing slow operations by faster ones (e.g., converting a divide by a constant into a multiply by another constant that gives the same result).
The second edition has new chapters on cyclic redundancy code and other error correcting codes. It also has a new appendix containing graphs of discrete functions.