Jaypee Institute of Information Technology

About: Jaypee Institute of Information Technology is a education organization based out in Noida, Uttar Pradesh, India. It is known for research contribution in the topics: Computer science & Cluster analysis. The organization has 2136 authors who have published 3435 publications receiving 31458 citations. The organization is also known as: JIIT Noida.

CMOS implementation of efficient 16-Bit square root carry-select adder

Abstract: A 16-bit Square Root Carry-Select Adder (SQRT CSA) is implemented and analyzed in this paper. The SQRT CSA is an architecture level modification to reduce area and power dissipation as compared to that of conventional CSA. Conventional CSA with Cin=1 block is replaced with binary-to-excess-1 converter (BEC) in the modified SQRT CSA structure. The architecture of 16-bit CSA is configured into five different stages with progressivley increasing data size. In order to realize 16-bit CSA, the basic building blocks, e.g., XOR gate, AND gate, 2:1 Mux, half adder (HA) and full adder (FA) are implemented using CMOS transmission gate (CMOS TG). The ripple carry adder (RCA) and binary-to-excess converter (BEC) of different bit sizes are also implemented. Transistor level schematics are drawn using Mentor Graphics Design Architect and simulations are carried out using Eldo with TSMC 0.35μm CMOS technology and supply voltage of 3.3 V.

Logarithmic coarsening in the Coulomb glass.

Abstract: We present numerical results from a comprehensive Monte Carlo study in two dimensions ($d=2$) of coarsening kinetics in the Coulomb glass (CG) model at half-filling. The CG model is characterized by spin-spin interactions which are long-range Coulombic and antiferromagnetic. For the nonequilibrium properties studied by us (spatial correlation functions and domain growth laws), we find that domain growth in the CG is analogous to that in the nearest-neighbor random-field Ising model. The domain length scale $L(t)$ shows a crossover from a regime of ``power-law growth with a disorder-dependent exponent'' $[L(t)\ensuremath{\sim}{t}^{1/\overline{z}}]$ to a regime of ``logarithmic growth with a universal exponent'' $[L(t)\ensuremath{\sim}{(lnt)}^{1/\ensuremath{\psi}}]$.