The thesis poses two fundamental questions based on current Colombian conditions, namely (1) can the biofuel industry produce bioethanol and biodiesel under sustainable guidelines; (2) to what extent is it possible expand energy crops for biofuels production purposes without jeopardizing sustainability goals? A approach recognized techniques such as Life Cycle Assessment (LCA) allows a comprehe...

Acknowledgments My appreciation and thanks is owed to many people. First, I would like to thank my adviser and friend Felipe Voloch for his insight, patience and encouragement. I am also greatly indebted to my family and friends for their support and understanding. Finally, a special note of thanks is due to my entire dissertation committee. In this dissertation we show that the Giulietti-Ughi ...

2003 ACKNOWLEDGMENTS First and foremost I would like to thank Dr. Steve Detweiler, Professor of Physics at the University of Florida, who was my advisor during my graduate studies. He has always been very supportive of my work, very willing to help and extremely patient with me. I feel very lucky to have worked with him during the past 5 years. I would also like to thank Dr. Bernard Whiting for...

there are limitations to simply increasing the switch buffer size, in that large full buffers cause unwanted latency, especially problematic in WAN environments. We plan to explore the RED gateway strategy of Floyd and Jacobson [9], which can be used as part of a feedback rate control mechanism to send information back to the sender and to limit the size of switch buffer queues. Whether the per...

17 where we take the finite sum as an infinite one. This does not affect significatively the bound but simplifies the eventual handling of the formulae. Thus, the value of the mth component of the error is bounded by and the explicit value of m leads to the proposition. A generalized vision of some parallel bidiagonal systems solvers. [Ston73] H. S. Stone. An efficient parallel algorithm for th...