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A. Raja arranged the sale of the 2G spectrum licenses below their market value. Swan Telecom, a new company with few assets, bought a license for 1,537 crore (US$307.4 million).Shortly thereafter, the board sold 45% of the company to Etisalat for 4,200 crore (US$840 million). Similarly, a company formerly invested in real estate and not telecom, the Unitech Group, purchased a license for 1,661 crore (US$332.2 million) and the company board soon after sold a 60% stake in their wireless division for 6,200 crore (US$1.24 billion) to Telenor. The nature of the selling of the licenses was that...

In recent years, many robotic platforms have been designed for structure and uneven terrains to carry out military, defense and Intelligence operations. But it is difficult to operate them in structured terrain especially when dimension of stairs are changing from place to place as per building and construction norms. If we work on this limitation of robotic platform to climb against variable dimensions of stairs, then it is possible to build a locomotive strategy which can overcome all sizes of stairs. This book deals with the designing and manufacturing of stair climbing robot based on the...

Variable compression ratio is becoming increasingly desirable as oil prices increase and car buyers have an increased interest in fuel economy. The cylinder head can be altered by using a hydraulic system which is connected to the crank shaft and responds according to the load and acceleration required. Increasingly stringent emissions and fuel economy standards have long remained a source of challenges for research in automobile engine technology development towards the more thermally efficient and less polluting engine. Spark ignition (SI) engines have lower part-load efficiency when...