Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Santiago' for 'CLST/-3.0/DST' instead in /home/v/pleiad/www/aspectscript/inc/feedcreator.class.php on line 62
http://pleiad.cl/aspectscript/ 2011-12-24T07:38:25-03:00 http://pleiad.cl/aspectscript/ http://pleiad.cl/aspectscript/lib/images/favicon.ico text/html 2011-12-21T00:20:52-03:00 aspectscript http://pleiad.cl/aspectscript/otm/matchercells?rev=1324437652&do=diff This is the web page. text/html 2011-08-03T01:30:12-03:00 aspectscript http://pleiad.cl/aspectscript/otm?rev=1312349412&do=diff Trace-based Mechanisms (TMs) support the definition of entities that observe and react to a program execution trace. TMs define sequences that trigger the execution of pieces of code when these sequences match specified execution traces of a program. TMs have numerous applications in domains like error detection, security, and modular definition of crosscutting concerns. text/html 2011-06-27T05:25:54-03:00 aspectscript http://pleiad.cl/aspectscript/otm/the_matching_of_causal_sequences/example1?rev=1309166754&do=diff The following example shows two independent Web applications that constitute a social network application. A user can publish a tweet and this tweet can be retweeted by the other user because both users follow each other. A repeated tweet (the same string). text/html 2011-06-27T05:19:35-03:00 aspectscript http://pleiad.cl/aspectscript/otm/ordering_of_messages?rev=1309166375&do=diff A Web application can send several Ajax requests to different servers. However, the application can retrieve and process the server responses in an arbitrary order; meaning that this application may behave nondeterministically due to the lack of control of the causality between Ajax requests and server responses. For example, the figure shows that if a WebApp sends two Ajax requests to a server, two scenarios are possible:the server returns server response 1 followed by server response 2 or vice… text/html 2011-06-27T05:14:49-03:00 aspectscript http://pleiad.cl/aspectscript/otm/the_matching_of_causal_sequences?rev=1309166089&do=diff Social network applications like Twitter and Facebook are another kind of Web application. Nowadays, these applications are widely used, making the analysis of their flow of information an active research topic. This flow of information is analyzed through the messages sent and received between users of these applications. Such an analysis is complex due to the need to observe and react to distributed causal relations that occur among user interactions. As an example of the analysis of the flow … text/html 2011-06-27T04:49:11-03:00 aspectscript http://pleiad.cl/aspectscript/otm/ordering_of_messages/discard_early?rev=1309164551&do=diff Another issue in the visualization arises due to the processing of early server responses. For example, consider a forum Web page that is frequently updated with threads from a server using Ajax, i.e. this Web page only increases with more threads that are located on the top. Every thread is shown with its title and its first posts, and the reader can click on a button “read more” to see the whole discussion of a given thread. Every post that is below the thread title is loaded dynamically using… text/html 2011-06-27T04:34:49-03:00 aspectscript http://pleiad.cl/aspectscript/otm/ordering_of_messages/discard_late?rev=1309163689&do=diff Web applications typically update data from servers (eg. whether, time, streaming media, dollar rates, thread posts). Developers have to overcome the issue of using obsolete data due to a late response of a server. For example, consider a website that shows an streaming media using several Ajax requests. If server responses of Ajax requests are retrieved in wrong order, the streaming media cannot be observed correctly. A solution could be to wait for all frames, however, this solution could dela…