des outils de compréhension de la structure des systèmes et de leur comportement, et une composante pratique car l'automatique a pour fin de faire fonctionner des systèmes en minimisant l'intervention humaine pour éviter toutes sortes de tâches fastidieuses, répétitives ou dangereuses, et donc d'en permettre l'automatisation […] Lire la suite☛ http://www.universalis.fr/encyclopedie/automatique/#i_2513
But the code wants to run all at once, in a millisecond. By the time IE actually loads the page of search results, the entire subroutine is long over. We have to slow things down and wait for the browser while its navigating. We could use something like Application.Wait(Now + TimeValue("00:00:05")) to wait 5 seconds, but if the page loads faster we’re wasting time waiting for nothing, and if the page takes longer we’re in the same pickle as before. Do While objIE.Busy = True Or objIE.readyState <> 4: DoEvents: Loop is an elegant Do...Loop solution consisting of 3 VBA statements we’ve tidied up on one line, using colons (:) to connect them. It’s saying: while IE is busy navigating, just sit here and run in circles. objIE.Busy = True and objIE.readyState <> 4 (<> means not equal) are essentially the same thing –one could probably be ommitted– but just to make sure the page is really done loading we make both of these conditions requirements for getting out of the loop, by using the logical operator Or. The DoEvents part is technically not needed but we add it in the loop to free up processing resources and allow other things to happen within Excel during this time, asynchronous to the running loop. For the over-achievers out there, here are some other ways we could have written this line of code to do the same thing.

Les phases de test dans le cycle de développement d'un produit logiciel permettent d'assurer un niveau de qualité défini en accord avec le client. Une procédure de test peut donc être plus ou moins fine, et par conséquent l'effort de test plus ou moins important et coûteux selon le niveau de qualité requis. Aujourd'hui, les métiers dédiés au monde du test commencent à apparaître. C'est en grande partie grâce à une prise de conscience de la complexité et de la criticité des produits. Il est alors important que ces différentes phases soient bien intégrées dans le cycle de développement sur la base de bonnes pratiques et de la rationalisation du processus.

I used Firebug to find the ID of the search button (magnifying glass) on the page, then used .getElementById again to grab it, and the .Click method to click it. Alternatively, we could have submitted the search box form like this instead objIE.document.getElementById("search_form_homepage").Submit. Actually, there’s a simpler method still that would allow us to skip the previous 3 steps altogether. Can you see it? Hint: take a look at the url we ended up with… https://duckduckgo.com/?q=auto+parts+in+Houston+TX. Got it? If you still don’t see it, and you don’t think you’ll be able to sleep tonight, email me 🙂


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

Automation is the technology by which a process or procedure is performed with minimum human assistance.[1] Automation [2] or automatic control is the use of various control systems for operating equipment such as machinery, processes in factories, boilers and heat treating ovens, switching on telephone networks, steering and stabilization of ships, aircraft and other applications and vehicles with minimal or reduced human intervention. Some processes have been completely automated.

La phase de "Setup" permet d'ajouter des actions préalables à la sollicitation du SUT, permettant ainsi de préparer l'environnement d'exécution du test. Par exemple, il peut s'agir d'injecter un jeu de donnée dans la base de donnée du SUT ou de déposer un fichier en entrée d'un batch. Cela permet de s'assurer que le test se déroulera dans des conditions maîtrisées et donc reproductibles, conditions indispensables pour industrialiser l'exécution de ses tests.
With the advent of the space age in 1957, controls design, particularly in the United States, turned away from the frequency-domain techniques of classical control theory and backed into the differential equation techniques of the late 19th century, which were couched in the time domain. During the 1940s and 1950s, German mathematician Irmgard Flugge-Lotz developed the theory of discontinuous automatic control, which became widely used in hysteresis control systems such as navigation systems, fire-control systems, and electronics. Through Flugge-Lotz and others, the modern era saw time-domain design for nonlinear systems (1961), navigation (1960), optimal control and estimation theory (1962), nonlinear control theory (1969), digital control and filtering theory (1974), and the personal computer (1983).
I’ve used other automation tools besides VBA. Ubot and iMacros are both excellent, and powerful programs (their own programming languages, really). In some respects they’re easier, and for 99% of web automation tasksg, you really can’t go wrong with either. But I got to where I only used VBA because my programming was getting into Windows API’s and command line calls (Visual Basic is tightly integrated with Windows), plus I often found myself using Excel alongside these programs anyway. I discovered there’s almost nothing VBA can’t do with automating Windows and Internet Explorer (even making IE appear as a different browser), and it seemed to me investing time learning Microsoft’s Visual Basic programming language just made more sense.

In the simplest type of an automatic control loop, a controller compares a measured value of a process with a desired set value, and processes the resulting error signal to change some input to the process, in such a way that the process stays at its set point despite disturbances. This closed-loop control is an application of negative feedback to a system. The mathematical basis of control theory was begun in the 18th century, and advanced rapidly in the 20th.
Another major shift in automation is the increased demand for flexibility and convertibility in manufacturing processes. Manufacturers are increasingly demanding the ability to easily switch from manufacturing Product A to manufacturing Product B without having to completely rebuild the production lines. Flexibility and distributed processes have led to the introduction of Automated Guided Vehicles with Natural Features Navigation.
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