Wind Powering America engineering, into the curriculum. Supported by local businesses and utilities, small wind turbines at rural schools also introduce the concept of energy and the need for national strategic thinking on energy issues to the communities that participate in the program. To help states and Native American communities understand their wind resources, WPA created an anemometer loan program. Participants borrow anemometers and installation equipment to measure wind resources. Anemometer data can be used to help businesses, developers, farmers, ranchers, and homeowners determine wind potential in selected areas. Each anemometer collects wind speed data in 10-minute intervals. The data aid wind farm
Gibbs measure property. Measures with this property are sometimes called Markov random fields. More strongly, the converse is also true: "any" positive probability distribution (nonzero density everywhere) having the Markov property can be represented as a Gibbs measure for an appropriate energy function. This is the Hammersley–Clifford theorem. What follows is a formal definition for the special case of a random field on a lattice. The idea of a Gibbs measure is, however, much more general than this. The definition of a Gibbs random field on a lattice requires some terminology: We interpret as the contribution to the total energy (the Hamiltonian)