Publisher's Disclaimer: 

This is a PPP research themes in slides of an unedited manuscript that has been accepted for publication, as a service to our customers we are providing this early version.

The PPP research is under continuous review of the resulting proof before it is published in its final citable form.

Please note that during the production process errors may be discovered which could affect the content(Pleaseflag these to us).

This work is protected by copyright and other intellectual property rights, which are retained by the author thesis.

This thesis cannot be reproduced or quoted extensively from without first obtaining permission in writing from the author.

The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the author.

When referring to this work will be reported full bibliographic information, including author informations.