Net energy gainNet Energy Gain (NEG) is a concept used in energy economics that refers to the difference between the energy expended to harvest an energy source and the amount of energy gained from that harvest. The net energy gain, which can be expressed in joules, differs from the net financial gain that may result from the energy harvesting process, in that various sources of energy (e.g. natural gas, coal, etc.) can be priced differently for the same amount of energy.
Nuclear power proposed as renewable energyWhether nuclear power should be considered a form of renewable energy is an ongoing subject of debate. Statutory definitions of renewable energy usually exclude many present nuclear energy technologies, with the notable exception of the state of Utah. Dictionary-sourced definitions of renewable energy technologies often omit or explicitly exclude mention of nuclear energy sources, with an exception made for the natural nuclear decay heat generated within the Earth.
WebcamUne webcam, parfois cybercaméra ou webcaméra, ou caméra IP, est une caméra conçue pour être utilisée comme un périphérique d'ordinateur, et qui produit une vidéo dont la finalité est de pouvoir être transmise en direct au travers d'un réseau, typiquement Internet ou intranet. Cela dit, la norme HD (haute définition) tend à se généraliser avec l'Internet haut débit.
Conférence en ligneUne conférence en ligne est une conférence qui se tient à travers un réseau informatique, notamment Internet (conférence web). S'il s'agit plutôt d'un séminaire web interactif, on parlera de web séminaire ou de « Webinaire ». S'il s'agit plutôt d'une formation en conférence web, on parlera de classe virtuelle. C'est une des composantes du Web 2.0. La conférence en ligne est une application internet qui offre la possibilité d'organiser des conférences, des réunions de travail ou des formations virtuelles avec des personnes distantes.
T-norm fuzzy logicsT-norm fuzzy logics are a family of non-classical logics, informally delimited by having a semantics that takes the real unit interval [0, 1] for the system of truth values and functions called t-norms for permissible interpretations of conjunction. They are mainly used in applied fuzzy logic and fuzzy set theory as a theoretical basis for approximate reasoning. T-norm fuzzy logics belong in broader classes of fuzzy logics and many-valued logics.
National Income and Product AccountsThe national income and product accounts (NIPA) are part of the national accounts of the United States. They are produced by the Bureau of Economic Analysis of the Department of Commerce. They are one of the main sources of data on general economic activity in the United States. They use double-entry accounting to report the monetary value and sources of output produced in the country and the distribution of incomes that production generates. Data are available at the national and industry levels.
Passive infrared sensorA passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications. PIR sensors detect general movement, but do not give information on who or what moved. For that purpose, an imaging IR sensor is required. PIR sensors are commonly called simply "PIR", or sometimes "PID", for "passive infrared detector".
Building engineerA building engineer is recognised as being expert in the use of technology for the design, construction, assessment and maintenance of the built environment. Commercial Building Engineers are concerned with the planning, design, construction, operation, renovation, and maintenance of buildings, as well as with their impacts on the surrounding environment. In Australia building engineers, also known as architectural engineers may work on new building projects, or renovations of existing structures.
