3,430 research outputs found
Novel Ternary Logic Gates Design in Nanoelectronics
In this paper, standard ternary logic gates are initially designed to considerably reduce static power consumption. This study proposes novel ternary gates based on two supply voltages in which the direct current is eliminated and the leakage current is reduced considerably. In addition, ST-OR and ST-AND are generated directly instead of ST-NAND and ST-NOR. The proposed gates have a high noise margin near V_(DD)/4. The simulation results indicated that the power consumption and PDP underwent a~sharp decrease and noise margin showed a considerable increase in comparison to both one supply and two supply based designs in previous works. PDP is improved in the proposed OR, as compared to one supply and two supply based previous works about 83% and 63%, respectively. Also, a memory cell is designed using the proposed STI logic gate, which has a considerably lower static power to store logic ‘1’ and the static noise margin, as compared to other designs
Simulated Tornado Optimization
We propose a swarm-based optimization algorithm inspired by air currents of a
tornado. Two main air currents - spiral and updraft - are mimicked. Spiral
motion is designed for exploration of new search areas and updraft movements is
deployed for exploitation of a promising candidate solution. Assignment of just
one search direction to each particle at each iteration, leads to low
computational complexity of the proposed algorithm respect to the conventional
algorithms. Regardless of the step size parameters, the only parameter of the
proposed algorithm, called tornado diameter, can be efficiently adjusted by
randomization. Numerical results over six different benchmark cost functions
indicate comparable and, in some cases, better performance of the proposed
algorithm respect to some other metaheuristics.Comment: 6 pages, 15 figures, 1 table, IEEE International Conference on Signal
Processing and Intelligent System (ICSPIS16), Dec. 201
Diffusivities bounds in the presence of Weyl corrections
In this paper, we investigate the behavior of the thermoelectric DC
conductivities in the presence of Weyl corrections with momentum dissipation in
the incoherent limit. Moreover, we compute the butterfly velocity and study the
charge and energy diffusion with broken translational symmetry. Our results
show that the Weyl coupling , violates the bounds on the charge and
energy diffusivity. It is also shown that the Weyl corrections violate the
bound on the DC electrical conductivity in the incoherent limit.Comment: v4: The appendix D and E were adde
Correspondence of phase transition points and singularities of thermodynamic geometry of black holes
We explore a formulation of thermodynamic geometry of black holes and prove
that the divergent points of the specific heat correspond exactly to the
singularities of the thermodynamic curvature. We investigate this
correspondence for different types of black holes. This formulation can also be
applied to an arbitrary thermodynamic system.Comment: 10 pages, 4 figures, typos fixed, references adde
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