In open loop control, the control action from the controller is independent of the "process output" (or "controlled process variable"). A good example of this is a central heating boiler controlled only by a timer, so that heat is applied for a constant time, regardless of the temperature of the building. (The control action is the switching on/off of the boiler. The process output is the building temperature).
Based on a formula by Gilles Saint-Paul, an economist at Toulouse 1 University, the demand for unskilled human capital declines at a slower rate than the demand for skilled human capital increases. In the long run and for society as a whole it has led to cheaper products, lower average work hours, and new industries forming (i.e., robotics industries, computer industries, design industries). These new industries provide many high salary skill based jobs to the economy. By 2030, between 3 and 14 percent of the global workforce will be forced to switch job categories due to automation eliminating jobs in an entire sector. While the number of jobs lost to automation are often offset by jobs gained from technological advances, the same type of job lost is not the same one replaced and that leading to increasing unemployment in the lower-middle class. This occurs largely in the US and developed countries where technological advances contribute to higher demand for high skilled labor but demand for middle wage labor continues to fall. Economists call this trend “income polarization” where unskilled labor wages are driven down and skilled labor is driven up and it is predicted to continue in developed economies.
It was from the automotive industry in the USA that the PLC was born. Before the PLC, control, sequencing, and safety interlock logic for manufacturing automobiles was mainly composed of relays, cam timers, drum sequencers, and dedicated closed-loop controllers. Since these could number in the hundreds or even thousands, the process for updating such facilities for the yearly model change-over was very time consuming and expensive, as electricians needed to individually rewire the relays to change their operational characteristics.
Here we reserve aEle as a different type of object variable. Specifically, we early bind it for use as a webpage link (the tags on a webpage). The other way would be to declare it more generically as Dim aEle as Object then later put it to use in one or more specific roles as an object — either way works. Once again, I could choose to call it anything, even mySuperHrefThingy, but I like the simplicity of aEle because it’s short and makes me think element.
Dans le chapitre « Assemblage des fragments » : […] de la bio-informatique est l'aide à la « mise en forme » des génomes de grande taille. En effet, grâce aux apports de la robotique, le biologiste peut désormais séquencer des génomes complets. Toutefois, la technologie des robots ne permet pas de traiter plus de 700 nucléotides sur un seul fragment d'ADN à la fois : le génome est donc découpé, au […] Lire la suite☛ http://www.universalis.fr/encyclopedie/biologie-la-bio-informatique/#i_2513