$\begin{array}{ccccc}&k^{\xi}&\Delta H&\Delta H\\ Q_{\xi}&0\leq\xi\leq&k^{\xi}&\xi&\Delta H&\left\langle\Delta H\ \right\rangle_{\xi}-\left\langle\Delta H\right\rangle_{\xi}&\left\langle\cdot\right\rangle_{\xi}\\ \xi&&&&\\ Z&\geq&Z\ +\left\langle\Delta H\right\rangle&0\\ &&\\ Z&&&&\\ 0&&&&\\ \end{array}$
  
Q

## 4.2  Second And Higher Order

$Z$$Z$$+\langle\Delta H\rangle$$+-$$\Delta H$$+-k^{\xi}$$\Delta H$  $k^{\xi}$$\left\langle\Delta H\ \right\rangle_{\xi}-$$\left\langle\Delta H\ \right\rangle_{\xi}\langle\Delta H\rangle_{\xi}+$$\left\langle\Delta H\right\rangle_{\xi}$$0\leq\xi\leq$  $\theta$$Q$$Q$$Q$$\theta$$\theta$
4.2.1  BOUND  CRITERION
0 e

$$\begin{array}{r l r l}{Q}&{{}s}&{{\bar{\theta}}^{*}}\end{array}$$
Z ≈   Z* +(∆H)* + −  * ∆H -* N Q s 0*  N * ∆ H