Distributed-element circuitDistributed-element circuits are electrical circuits composed of lengths of transmission lines or other distributed components. These circuits perform the same functions as conventional circuits composed of passive components, such as capacitors, inductors, and transformers. They are used mostly at microwave frequencies, where conventional components are difficult (or impossible) to implement. Conventional circuits consist of individual components manufactured separately then connected together with a conducting medium.
Atmospheric modelIn atmospheric science, an atmospheric model is a mathematical model constructed around the full set of primitive, dynamical equations which govern atmospheric motions. It can supplement these equations with parameterizations for turbulent diffusion, radiation, moist processes (clouds and precipitation), heat exchange, soil, vegetation, surface water, the kinematic effects of terrain, and convection. Most atmospheric models are numerical, i.e. they discretize equations of motion.
Structure et agentivitéDans les sciences sociales existe un débat permanent sur la primauté de la structure ou de l’agentivité (en anglais agency, terme qui est parfois utilisé en français) dans le façonnement des comportements humains. Les structures sont des ensembles de dispositifs qui influencent ou limitent les choix et les opportunités disponibles. L’agentivité est la capacité des individus d’agir indépendamment des structures sociales et de faire librement leur propre choix.
