Hybrid halide perovskites represent one of the most promising solutions toward the fabrication of all solid nanostructured solar cells, with improved efficiency and long-term stability. This article aims at investigating the properties of CH3NH3PbI3 with controlled loading time in CH3NH3I solution via a two-step sequential deposition and correlating them with their photovoltaic performances. It...

Efficiency analysis of sonic drilling wells and the choice rational operational modes drill bit vibration loading to increase rate penetration was carried out. The are studied on basis an assessment power process with a cavitation hydrovibrator. This paper presents approach calculating mechanical oscillatory bit. uses developed mathematical model dynamics hydraulic vibrator string. describes in...

This paper describes how one can reduce the memory access time with pre-emphasis (PE) pulses even in non-volatile random-access memory. Optimum PE pulse widths and resultant minimum word-line (WL) delay times are investigated as a function of column address. The impact process variation constant WL, cell current, resistance deciding path on optimum discussed. WL modeled fitting curves address a...

The consumption of power has become an important issue in modern VLSI design. Power consumption can be reduced by replacing some flip-flops with fewer multi-bit flip-flops. Multi-bit flip-flop is one of the methods for clock power consumption reduction. This project focuses on reduction of power using multi-bit flipflops by clock synchronization. Two single bit flip-flops are synchronized with ...

In rock drilling, bit wear is a major factor in determining bit life, the cost of drilling and may significantly influence the drilling method selected for given rock type. Effective control of bit wear can yield significant cost savings. Prediction of cuttability or drillability requires an understanding of the cutting action and the mode of wear and their interaction with the rock propertiesW...

BACKGROUND We sought to develop a consensus statement for the use of off-loading in the management of diabetic foot ulcers (DFUs). METHODS A literature search of PubMed for evidence regarding off-loading of DFUs was initially conducted, followed by a meeting of authors on March 15, 2013, in Philadelphia, Pennsylvania, to draft consensus statements and recommendations using the GRADE (Grading ...

Abstrucf-Decoding of a correlative level coding or partialresponse signaling system is discussed in an algebraic framework. A correction scheme in which the quantizer output includes ambiguity levels is proposed. The implementation and algorithm of error correction is discussed in some detail. An optimum design of the quantizer based on Chow's earlier work is discussed. Both analytical and sim...

In this paper, a system using soft decision decoding of convolutional codes is investigated for MPEG-4 Advanced Audio Coding. Under severe channel random bit error rates of 4.00×10 and above, the proposed scheme is able to achieve above 90% improvement in residual bit error rate performance over the current scheme. The average percentage overhead incurred using the proposed scheme is about 21%,...

In this paper Bit Error Rate performance of OFDM BPSK, QPSK, 4-QAM, 16-QAM System over Rayleigh fading channel is analyzed. OFDM is a orthogonal frequency division multiplexing to reduce inter-symbol interference problem. Two of the most equalization algorithms are minimum mean square error (MMSE) equalizer and maximum likelihood sequence estimation (MLSE) equalizer. Finally simulations of OFDM...

Abstract: In this paper, a multilevel-quantized softlimiting (SL-MQ) detector for frequency hopping spread spectrum multiple access (FH-SSMA) system is proposed and analyzed. Numerical and simulation results in frequency selective Rayleigh fading channels show that as compared to the hard-limiting (HL) detector, the new SL-MQ with can improve the system capacity by almost at the bit error rate ...