About this eBook
PREFACE Optimal utilization of resources is one of the fundamental aspect in commercial success of an organization . Operations Research is a group of optimization techniques of effective utilization of resources subject to a set of constraints with the objective of minimization of cost or maximization of profit to an organization. Operations Research is an easy subject if taught well and learnt systematically. This is further augmented if complemented by a good book. In my years of teaching and training I came across a number of books on the subject but many of them would not meet specific requirement of the students. The students find the usual books too bulky considering the time constraint they have in the semester scheme. This has promoted me to write this book specifically for the students of Visvesvaraya Technological University as per the syllabus. This book meets the complete requirement of the students of Computer Science and allied courses. I have adapted, assimilated and expanded my class room notes by enlarging its scope based on student feedback over the years to develop this book. It is a joy to write preface to the new edition as it shows the acceptance of the first edition. The enthusiastic response received from the students and faculty encouraged me in bringing out this edition. It is my humble admission that the new edition is entirely due to the felt needs of the teaching faculty as well as the students expressed to me during my many interactions both on and off campus. During the past two years, I have felt that there was a scope for improvement of the book, which complemented the feelings of both faculty and students. This edition is the result of these confabulations. The revision of the text has been extensive with the objective of further enhancing and strengthening the conceptual as well practical knowledge about various techniques of Operations Research. Almost every chapter has been reorganized and re-written to make explanation more cogent through relevant and interesting examples. Thus, this edition is a completely a new book. vii
I am confident that the teaching faculty as well as the students will find this book very useful not only for their academics but also outside it. I believe that Success is a journey, not a destination , any suggestions for further improvement of the contents are most welcome, will be thankfully acknowledged and incorporated in the subsequent editions. Please mail your suggestions to sreenivasa.m123 gmail.com Wishing you to learn with pleasure .
PREFACE TO THE FIRST EDITION Operations Research is an easy subject if taught well and learnt systematically. This is further augmented if complemented by a good book. My first book was well received by the faculty and students of mechanical engineering and allied subjects. With the increased usage of computers and current technologies to solve many managerial problems, there has been a very strong felt requirement for a book specifically to meet the requirements of computer science and information science students. Many of my colleagues notably Prof. Gorabal J.V, Head, Computer Science Engineering, RLJIT and Prof. Thippeswamy K, Head, Information Science Engineering, RLJIT, suggested and encouraged me to write a book specifically meeting the complete needs of Computer Science, Information Science Engineering and Master of Computer Applications students. This book is a result of that endeavor.
Operations Research as an art and science has an important role to play in today s world where technology intervenes in every aspect of our lives. Transforming OR as a key ingredient of this technology ruled world where management and decision making is considerably automated has become critical. Understanding this aspect, many students of computer science and