.... Because we are sorrounded by so many good people.

Remain thankful to all of you!

It gives me immense pleasure to express my sincere thanks and gratitude to all those who have kindly helped me in carrying out this research work. I am very much thankful to Prof. Virendra Singh, IIT Bombay and Prof Matthew Jacob for their guidance throughout the research. From the very beginning of my Ph.D. days, Prof. Matthew and Prof. Singh have been guiding me in all the aspects of my research. I am particularly thankful to Prof Virendra Singh for he has kindly welcomed me to IIT Bombay and ensured my stay and research in every visit to CADS laboratory. Prof Matthew has been constantly monitoring my progress which helped me pursue the research even when I used to feel moral weakness. Prof. Matthew has provided me several technical inputs although my research area is slightly different than his usual area of interest, the inputs have latter resulted in the publications.
Prof. Matthew has been very much accommodating in various situation particularly for my visit to IIT Bombay. I am thankful to MHRD, Govt. of India and Indian Institute of Science for supporting my entire research by institute scholarship.

It was my pleasure to share and discuss some our ideas with Prof Shankar Balachandran, IIT Chennai. I respect his quick ideas and suggestions, many of our work got good shape partly because of his suggestions.

Prof Kewal Saluja of the University of Wisconsin for all of our works has given many valuable suggestions and reviewed our ideas on Joint-scan architecture. In the starting of this work Prof. Saluja has given us a good motivation to look into the architectural aspect of Joint-scan. Prof Janak Patel, University of Illinois, UC, used be our frequent guest at CADSL, IIT Bombay. Many of our ideas which sprung from our daily meeting are strengthen by Prof. Janak Patel. He often boosts our moral in pursuing research with engineering attitude. Prof Janak has taught us how by taking care of minor aspects of research work, the larger problem gets a better understanding. 

During my stay at IISc, I have met with some of the fine professors whose words are filled with inspirations and encouragements. I thank Prof Y Narahari for his support in each and every difficulty of my IISc research life. Prof Narahari is one of the professors who understands the student's di culty
from the rst person perspective. Prof M Narasimha Murthy has always helped me and ensured my timely research and completion of the thesis. I am very much thankful to the current chairman of our department Prof. Jayant Haritsa for he has always pushed me for early completion of the thesis, Professor has officially ensured all of my visits to IIT Bombay for research to happen in fast track.

I would like to acknowledge the help I got from the technical staff member of ALTERA laboratory at Department of Electronic System Engineering, IISc in using Synopsys and other CAD tools. I also would like to thank my colleagues at VLSI Design laboratory, EE, IIT Bombay for providing me access to Synopsys and Cadence tools. I acknowledge the collaborative work with LSI Logic where we could perform several experiments on peak power issues.
Many of my friends have contributed to our research work. I am extremely thankful to my co-authors who have actually experimented with many of our ideas. My colleague Deepak Malani has contributed in several aspects of our work on worst power estimation. Thanks to Alok Malakar for conducting a lot of experiments on  flip-flop design, building libraries, doing place and routing of the proposed architecture. Thanks to Binod and Nehru for exploring and experimenting on Dynamic and Bombay scan. Our friend Satyadev has done a work for which I am really thankful to him. We have
designed a set of  flip-flops for high performance and low power scan test. Thanks to Rohini and Nihar for extending the work on worst power estimation. I am thankful to Suryakant Ji and Toral madam for their constant support in several technical diffi culties. Our research atmosphere has always been kept vibrant by several of my friends at CADSL, I thank Newton Singh, Prashant, Sandipan, Nitant, Karthik, Virat, and Vijay for always keeping me encouraged in doing research of some or other kind.

IISc campus has always been a place of quest. Though I am an ordinary researcher but my friends have always kept my quest alive for knowing the laws and principles of Nature. I thank Hrishikesh, Ramesh, Ashish, Thulasi Raman, Ramana Reddy, Govind, Dipti Bhai, Tanuj, Rahul, and other friends  for helping me on several occasion for several reasons. We have always cherished the discussions on the topic which great scientists sometime feel reluctant to discuss. Especially I thank to Ramesh and Ashish for sparing time for me to make me understand the CAD tools and the detail concept of VLSI technology.

Staying in Bangalore has always been pleasant for me. The due goes to my senior brothers of Bhaktivedanta Institute, Bangalore who have always provided me an opportunity to explore the diff erent horizon of life.

The love and care that I have received from my parents can not be acknowledged formally, those are priceless. I pray to the lord Jagannatha that may I ever serve them and keep them in a happy life.

Saying is that without the mercy of supreme lord even a blade of grass does not move. Lord, you are the great, may your greatness be always echoed in my mind.

PS: This is acknowledgment for the thesis which I submitted recently to the Computer Science Department at IISc, Bangalore.

Jaynarayan, Bangalore, India