@Override
    public double tau(Compound cj,Compound ci,ActivityModelBinaryParameter deltaU, double temperature) {
        double u = u(cj, ci, deltaU, temperature);
        return Math.exp(- u/(Constants.R * temperature));
    }
@ Override public double tau ( Compound cj , Compound ci , ActivityModelBinaryParameter deltaU , double temperature ) { double u = u ( cj , ci , deltaU , temperature ) ; return Math . exp ( - u / ( Constants . R * temperature ) ) ; }
}