

![0_image_0.png](0_image_0.png)

![0_image_1.png](0_image_1.png)

```
Figure 27 illustrates the ee
                           t of point sele
                                        tion heuristi
                                                     s on 
                                                          ontrol. We 
                                                                      ompare the
                                                                                

```

results for lookahead ontrol only, using approximations obtained after 1, 5 and 10 improve-

```
ment 
     y
       les (ea
             h 
               y
                 le 
                    onsists of 40 grid point updates). The test results show that, as
                                                                        

```
