Mechanical energy nonconservative forces, like frictional forces, will be present, but often they are of negligible values and the mechanical energy's being constant can therefore be a useful approximation. In elastic collisions, the mechanical energy is conserved but in inelastic collisions, some mechanical energy is converted into heat. The equivalence between lost mechanical energy (dissipation) and an increase in temperature was discovered by James Prescott Joule. Many devices are used to convert mechanical energy to or from other forms of energy, e.g. an electric motor converts electrical energy to mechanical energy, an electric generator converts mechanical energy into electrical energy and a
Dalian Software Park Most of the IT workers come from the engineering schools of the universities in Dalian and other cities in Northeast China. In Dalian, there are Dalian University of Technology, Dalian Jiaotong University, Dalian Maritime University, and Neusoft Institute of Information which is within the Park. In other cities, there are Northeast University in Shenyang, Jilin University in Changchun, and Harbin Industrial University in Harbin. Workers with English ability come from the various universities where English is predominantly their first foreign language, but they lack the experience of the Indian university graduates with working knowledge of English. There are also the