We present a general scheme for calculating the correlation energy in molecular systems by extrapolation of an energy Ž . expression, E t , obtained from a modified Hamiltonian whose range is reduced to induce localization of the physical Ž . interactions. The variable t is introduced such that one recovers the physical system for ts0 and E t s0 for tTM`. We show that very accurate correlation ...

We report a new approach of 2D regional correlation analysis capable of analyzing fluctuation dynamics of complex multiple correlated and anticorrelated fluctuations under a noncorrelated noise background. Using this new method, by changing and scanning the start time and end time along a pair of fluctuation trajectories, we are able to map out any defined segments along the fluctuation traject...

Energy and information correlation: towards sustainable energy C.C. Chan, F.C. Chan & Dan Tu a Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong b Institute for Advanced Sustainability Studies, Potsdam, Germany c Bohai University, China d Hong Kong Institution of Engineers, Hong Kong e Department of Electrical Engineering, Technical University of Berlin...

It has been shown theoretically and observationally that the Green's function for acoustic and elastic waves can be retrieved by cross-correlating fluctuations recorded at two locations. We extend the concept of the extraction of the Green's function to a wide class of scalar linear systems. For systems that are not invariant under time reversal, the fluctuations must be excited by volume sourc...

Since the industrial revolution happened in the middle of 18th century, both the thermal equilibrium and ecological equilibrium of earth environment have been broken. The skyrocketing energy consumption and greenhouse gases emission are threatening the sustainable development of human beings. The only way out is to build up new energy structure. However, the new energy structure cannot be effec...