The optical conductivity contains relevant information on the properties of correlated electron systems. In infinite dimensions, where dynamical mean field theory becomes exact, vertex corrections can be neglected and computed from particle-hole bubbles. An interesting question concerns nature effect most in finite-dimensional A recent numerical study showed that dominant correction near an ord...

The philosophy of efficient energy consumption is vitally crucial to profitable production cost in manufacturing industries. This is because the unit production cost is largely determined by the cost of unit energy supply; which is quite higher than the cost of raw materials in Nigeria. It has been established that the Nigerian industrial sector is responsible for 8.7% of the total energy consu...

Powerful advantages of programmable logic controller (PLC) dominate process industries. Scan time PLC increases with the number inputs, rungs added in ladder diagram (LD). Researchers have identified and proved that field gate array (FPGA) is more suitable than for high speed applications. executes instructions represented through LD. programmers are not familiar FPGA programming. But, does sup...

Abstract This study aims to create a prototype of the SCADA system used control lighting source facilities and fan-based Raspberry Pi in workshop Electrical Engineering Study Program Politeknik Enjinering Indorama. consists Model B, UL 2803 Driver, switch module, relay lamp, fan. as controller or mini PLC programmed using CodeSys software with ladder logic diagram programming. The System proces...

The ground-state magnetic phase diagram of a spin S = 1/2 two-leg ladder with alternating rung exchange J⊥(n) = J⊥[1 + (−1) nδ] is studied using the analytical and numerical approaches. In the limit where the rung exchange is dominant, we have mapped the model onto the effective quantum sineGordon model with topological term and identified two quantum phase transitions at magnetization equal to...