I am concerned about the implications of the Editorial by Drs. Lown and Axelrod which appeared in the October 1972 issue of Circulation. Although the authors rightfully point out the numerous technical problems still to be overcome in the development of such defibrillators, their conclusions in the last three paragraphs indicate a heavy bias in favor of "practical research." Although Dr. Lown h...

Reliability theory bases on the concept of boolean components, i.e. of up, operating or down, failed components. But often such assumption is not adequate for modeling specific behaviors of components, units, subsystems and systems. It cannot catch, for example, different operating conditions of components due to dependencies on other components or environment variations. Aim of this paper is t...

We analyse the reliability (survival function) of a duplex system characterized by hot standby and sustained an auxiliary unit in cold standby. The entire is attended two heterogeneous repairmen. Our methodology based on theory sectionally holomorphic functions combined with notion dual transforms. Finally, we also study total occupational time repairman responsible for repair failed priority d...

In this paper, a new single-port five-transistor (5T) Static Random Access Memory (SRAM) cell and associated read/write assist circuitries is proposed. Amongst them, a voltage level conversion circuit is to provide a voltage of the respective connected word line to be lower than or equal to a power supply voltage VDD such that the read/write-ability of the cell can be improved. Furthermore, a v...

The present study deals with a robot safety system composed of standby robot units and inbuilt safety unit. When the main operative unit fails, it is replaced by the standby robot unit available in the system. The concept of reboot delay is also incorporated in this study according to which the robot unit is rebooted if it is not successfully recovered. The recovery and reboot times of failed u...

A current sensing device, namely Hall Effect MOSFET (HEMOS) is proposed. It is experimentally shown that the HEMOS enables a non-contacting, and non-disturbing current measurement, which can be used for IDDQ testing of internal circuit blocks. The HEMOS can be manufactured and integrated in a VLSI with the conventional CMOS process. The HEMOS is also helpful to establish the low standby current...

Leakage current minimization is an important topic for event driven applications that spend most of their times in standby mode. Power gating technique is one of the most effective ways to reduce the standby leakage current. However, when power gating technique is applied to a functional unit, there exists a delay-power tradeoff, which can be characterized with the widths of sleep transistors. ...

R. K. Agnihotri and S. K. Statsangi, Analysis of a two-unit redundant system with optimum interchangement time, Reliab. 35 (1995), no. 4, 749–750. B. S. Dhilon, Om human reliability bibliography, Microelectron. Reliab. 20 (1980), 371–373. B. S. Dhilon, Stochastic models for predicting human reliability, Microelectron. Reliab. 22 (1982), 491–496. B. S. Dhilon and R. B. Mishra, Reliability evalua...

In this paper, a coherent system consisting of non-identical dependent active components and equipped with non-identical dependent standby components is considered. The main object of this study is the random quantity which account the number of surviving standby components when the system is failed. We represent the distribution function of the corresponding random variable in terms of system ...

Many fielded systems use cold standby redundancy as an effective system design strategy. However, methods for analyzing the reliability of k-out-of-n cold standby systems, particularly with components having age-dependent hazard rates, are limited. In this paper, using the concepts of counting processes, we propose an efficient method to evaluate the reliability of k-out-of-n cold standby syste...