Deliberative democracyDeliberative democracy or discursive democracy is a form of democracy in which deliberation is central to decision-making. Deliberative democracy seeks quality over quantity by limiting decision-makers to a smaller but more representative sample of the population that is given the time and resources to focus on one issue. It often adopts elements of both consensus decision-making and majority rule. Deliberative democracy differs from traditional democratic theory in that authentic deliberation, not mere voting, is the primary source of legitimacy for the law.
Participatory democracyParticipatory democracy, participant democracy or participative democracy is a form of government in which citizens participate individually and directly in political decisions and policies that affect their lives, rather than through elected representatives. Elements of direct and representative democracy are combined in this model. Participatory democracy is a type of democracy, which is itself a form of government. The term "democracy" is derived from the Greek expression δημοκρατία (dēmokratia) (δῆμος/dēmos: people, Κράτος/kratos: rule).
Deliberative opinion pollA deliberative opinion poll, sometimes called a deliberative poll, is a form of opinion poll taken before and after significant deliberation. Professor James S. Fishkin of Stanford University first described the concept in 1988. The typical deliberative opinion poll takes a random, representative sample of citizens and engages them in deliberation on current issues or proposed policy changes through small-group discussions and conversations with competing experts to create more informed and reflective public opinion.
Representative democracyRepresentative democracy, also known as indirect democracy, is a type of democracy where elected people represent a group of people, in contrast to direct democracy. Nearly all modern Western-style democracies function as some type of representative democracy: for example, the United Kingdom (a unitary parliamentary constitutional monarchy), Germany (a federal parliamentary republic), France (a unitary semi-presidential republic), and the United States (a federal presidential republic).
EfficiencyEfficiency is the often measurable ability to avoid wasting materials, energy, efforts, money, and time while performing a task. In a more general sense, it is the ability to do things well, successfully, and without waste. In more mathematical or scientific terms, it signifies the level of performance that uses the least amount of inputs to achieve the highest amount of output. It often specifically comprises the capability of a specific application of effort to produce a specific outcome with a minimum amount or quantity of waste, expense, or unnecessary effort.
Thermal efficiencyIn thermodynamics, the thermal efficiency () is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, steam turbine, steam engine, boiler, furnace, refrigerator, ACs etc. For a heat engine, thermal efficiency is the ratio of the net work output to the heat input; in the case of a heat pump, thermal efficiency (known as the coefficient of performance) is the ratio of net heat output (for heating), or the net heat removed (for cooling) to the energy input (external work).
Energy conversion efficiencyEnergy conversion efficiency (η) is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The input, as well as the useful output may be chemical, electric power, mechanical work, light (radiation), or heat. The resulting value, η (eta), ranges between 0 and 1. Energy conversion efficiency depends on the usefulness of the output. All or part of the heat produced from burning a fuel may become rejected waste heat if, for example, work is the desired output from a thermodynamic cycle.
Economic efficiencyIn microeconomics, economic efficiency, depending on the context, is usually one of the following two related concepts: Allocative or Pareto efficiency: any changes made to assist one person would harm another. Productive efficiency: no additional output of one good can be obtained without decreasing the output of another good, and production proceeds at the lowest possible average total cost. These definitions are not equivalent: a market or other economic system may be allocatively but not productively efficient, or productively but not allocatively efficient.
Fuel efficiencyFuel efficiency is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemical potential energy contained in a carrier (fuel) into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per application, and this spectrum of variance is often illustrated as a continuous . Non-transportation applications, such as industry, benefit from increased fuel efficiency, especially fossil fuel power plants or industries dealing with combustion, such as ammonia production during the Haber process.
