The objective of this paper is to develop and evaluate an Energy COnservation PET (ECOPET) system in a PDA platform with mobile learning strategy for energy education. The system helps learners learn appropriate energy consumption by making a better trade-off decision while facing the dilemma between a virtual pet’s comfortable living and saving more energy. The system allows learners to play a...

Analyzing the energy performance in a building is an important task in energy conservation. To accurately predict the energy consumption is difficult in practice since the building is a complex system with many parameters involved. To obtain enough historical data of energy uses and to find out an approach to analyze them become mandatory. In this paper, we propose a simulation method with the ...

Recent observations 5] indicate that energy-momentum methods might be better suited for the numerical integration of highly oscillatory Hamiltonian systems than implicit symplectic methods. However, the popular energy-momentum method, suggested in 3], achieves conservation of energy by a global scaling of the force eld. This leads to an undesirable coupling of all degrees of freedom that is not...