18 Minuten beträgt die durchschnittliche Halbwertszeit eines Tweets, gemessen daran, wie lange er weitergezwitschert wird. Zu diesem Schluss kommt Peter Bray von seomoz anhand eigener Statistiken und zeigt auf, was dies für die Twitter-Nutzung bedeutet. Ein Ergebnis: Weniger ist ...
The brittleness of tests or specs is a recurring topic in BDD (or acceptance test-driven development, specification-by-example, or whatever you choose to call the thing where you write acceptance criteria, automate them and then make the application match). This is a tricky area, and there are probably as many styles of defining and grouping acceptance…
If you wanted to hand a book over to a new tester, to help them get to grips with the world of testing, what topics would you expect or like to see in it?
Nüchtern betrachtet verkauft Apple bloß technische Geräte für den Alltag. Doch um die Firma hat sich eine Gemeinde Konsumgläubiger gebildet, deren Horizont die Marke ist. Wenn von Freitag an das neue iPhone verkauft wird, sind weitere Höhenflüge zu erwarten. Die Hysterie kann nicht über die Schattenseite des Konzerns hinwegtäuschen. Apple ist zum Sinnbild einer fragwürdigen Globalisierung geworden.
Hardware performance monitoring counters have recently received a lot of attention. They have been used by diverse communities to understand and improve the quality of computing systems: for example, architects use them to extract application characteristics and propose new hardware mechanisms; compiler writers study how generated code behaves on particular hardware; software developers identify critical regions of their applications and evaluate design choices to select the best performing implementation. In this paper, we propose that counters be used by all categories of users, in particular non-experts, and we advocate that a few simple metrics derived from these counters are relevant and useful. For example, a low IPC (number of executed instructions per cycle) indicates that the hardware is not performing at its best; a high cache miss ratio can suggest several causes, such as conflicts between processes in a multicore environment. We also introduce a new simple and flexible user-level tool that collects these data on Linux platforms, and we illustrate its practical benefits through several use cases.
Bill Gates has become a powerful influence on publishing. An endorsement from the philanthropist and Microsoft cofounder can cause tangible sales spikes, reminiscent of the golden ticket that once came with being picked for Oprah's book club. So just what does Gates read? Quartz manually compiled all 186 of the books recommended on his blog,...
Over the last several years we’ve seen a whole range of ideas regarding the architecture of systems. These include: Hexagonal Architecture (a.k.a. Ports and Adapters) by Alistair Cockburn and adopted by Steve Freeman, and Nat...
The most critical intervention point to affect design at and across all physical scales (see graphic below) is to pay attention to the processes and patterns underlying their physical manifestations…
R. Stecher, C. Niederée, and W. Nejdl. Proceeding of the 17th ACM conference on Information and knowledge management, page 797--806. New York, NY, USA, ACM, (2008)
S. Bethard, and D. Jurafsky. Proceedings of the 19th ACM international conference on Information and knowledge management, page 609--618. New York, NY, USA, ACM, (2010)
W. Müller, and H. Schumann. Proceedings of the 35th conference on Winter simulation: driving innovation, page 737--745. Winter Simulation Conference, (2003)
C. Hedeler, and N. Paton. Advances in Databases, volume 7051 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-642-24577-0_11.(2011)
A. Sarma, G. Bortis, and A. van der Hoek. Proceedings of the twenty-second IEEE/ACM international conference on Automated software engineering, page 94--103. New York, NY, USA, ACM, (2007)
E. Bersoff, V. Henderson, and S. Siegel. Proceedings of the software quality assurance workshop on Functional and performance issues, page 9--17. New York, NY, USA, ACM, (1978)
R. Angles, and C. Gutierrez. The Semantic Web: Research and Applications, volume 3532 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2005)
A. Halevy, M. Franklin, and D. Maier. Proceedings of the twenty-fifth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems, page 1--9. New York, NY, USA, ACM, (2006)