Modeling and simulationModeling and simulation (M&S) is the use of models (e.g., physical, mathematical, behavioral, or logical representation of a system, entity, phenomenon, or process) as a basis for simulations to develop data utilized for managerial or technical decision making. In the computer application of modeling and simulation a computer is used to build a mathematical model which contains key parameters of the physical model. The mathematical model represents the physical model in virtual form, and conditions are applied that set up the experiment of interest.
Detector (radio)In radio, a detector is a device or circuit that extracts information from a modulated radio frequency current or voltage. The term dates from the first three decades of radio (1888-1918). Unlike modern radio stations which transmit sound (an audio signal) on an uninterrupted carrier wave, early radio stations transmitted information by radiotelegraphy. The transmitter was switched on and off to produce long or short periods of radio waves, spelling out text messages in Morse code.
ExciteExcite est une collection de sites et services Web, lancée en décembre 1993. excite est un service en ligne offrant une variété de contenu, y compris un portail Internet montrant des nouvelles, la météo, un moteur de recherche, un webmail, une messagerie instantanée, des cotations boursières, et une page d'accueil personnalisable. Le contenu est assemblé à partir de plus de 100 sources différentes. Le portail et les services excite sont la propriété de Excite Networks, mais aux États-Unis, excite est un portail personnalisable, appelé My Excite, qui est exploité par Mindspark et détenu par IAC Search and Media.
