and my brother Kiran, for their constant prayers and encouragement throughout my life. I am very grateful to my advisor Dr. A. Srivastava for his guidance, patience and understanding throughout this work. His suggestions, discussions and constant encouragement have helped me to get a deep insight in the field of VLSI design. Departments, for supporting me financially during my stay at LSU. I am...

We demonstrate that it is possible to use the balanced homodyning with array detectors to measure the quantum state of correlated two-mode signal field. We show the applicability of the method to fields with complex mode functions, thus generalizing the work of Beck(Phys. Rev. Lett. 84, 5748 (2000)) in several important ways. We further establish that, under suitable conditions, array detector ...

In the past, copyright law was of interest only to legal scholars and Hollywood film types. Today, however, copyright law is on the front page of local newspapers, argued about in conversations at the water cooler, and discussed by teenagers looking to find free music on the Web. Intellectual property intimidates those who don't understand the underlying principles or those that don't speak the...

Interaction of a two-level atom with a single mode of electromagnetic field including Kerr nonlinearity for the field and intensity-dependent atom-field coupling is discussed. The Hamiltonian for the atom-field system is written in terms of the elements of a closed algebra, which has SU(1,1) and Heisenberg-Weyl algebras as limiting cases. Eigenstates and eigenvalues of the Hamiltonian are const...

Inhibitors of tumor necrosis factor-α converting enzyme (TACE) have potential as therapeutics for various diseases. Many small molecule inhibitors, however, exhibit poor specificity profiles because they target the highly conserved catalytic cleft of TACE. We report for the first time the molecular interaction of a highly specific anti-TACE antagonistic antibody (MEDI3622). We characterized the...

591 July 2012, Vol. 102, No. 7 SAMJ Progressive disempowerment and provincial healthcare under-budgeting in the Eastern Cape almost forced the resignation of its corruption-buster chief, Dr Siva Pillay and his most trusted administrators last month. The political moves were directly responsible for thousands of healthcare workers going without pay or being underpaid, for five months. National h...