We present ABCD-NL, a technique that approximates non-linear analog circuits using purely Boolean models, to high accuracy. Given an analog/mixed-signal (AMS) system (e.g., a SPICE netlist), ABCD-NL produces a Boolean circuit representation (e.g., an And Inverter Graph, Finite State Machine, or Binary Decision Diagram) that captures the I/O behaviour of the given system, to near-SPICE accuracy,...

As the importance and complexity of medical device software continues to increase there is growing demand for effective process assessment and improvement in this domain. To address this need the Medi SPICE process assessment and improvement model is being developed. Regulatory compliance is both an important and challenging aspect of medical device software development. Particularly as new reg...

SPICE is a widely used tool for simulation of analog circuits. Accurate models of devices are crucial for obtaining realistic results from the simulation. Although SPICE provides circuit designers with built-in models for most widely used devices many devices still must be modelled with subcircuit models in order to achieve sufficient accuracy. The hardest part of creating a SPICE model for a p...

The demand for medical device software continues to grow and there is an associated increase in its importance and complexity. This paper discusses medical device software process assessment and improvement. It outlines Medi SPICE, a software process assessment and improvement model which is being developed to meet the specific safety-critical and regulatory requirements of the medical device d...

Clove is a familiar spice widely used in medicinal preparations. The author has unravelled here some of the little known fact of the spice. the origin and spread of this valuable medicinal plants is also discussed here with historical background.

The field of optimisation is still not appropriately covered in modern computer programs for circuit analysis as SPICE, which was originally developed at the University of California at Berkeley. The last official release of SPICE was published in 1992 and includes interactive interpreter language called Nutmeg, which is at first glance very convenient for coding optimisation loops. But it turn...

The analogue circuit simulator SPICE was originally developed at the University of California at Berkeley. It was has been constantly upgraded and maintained at Berkeley from 1972 to 1992, when the last official release 3f4 was published. The UNIX based source code is still available as freeware at ftp://ic.berkeley.edu/pub/Spice3/. Although the research at Berkeley has stopped, many commercial...

This paper will discuss the following questions: Is SPICE an AHDL and is it a viable alternative to currently proposed AHDL languages? Second, should AHDL constructs or SPICE syntax compatibility be the starting point for analog extensions to VHDL? THE Requirements Of An AHDL A variety of different AHDL vendors and publications have proposed numerous requirements for an AHDL. [7, 9, 10, 12, 14,...

BACKGROUND The accurate definition of organs at risk (OARs) is required to fully exploit the benefits of intensity-modulated radiotherapy (IMRT) for head and neck cancer. However, manual delineation is time-consuming and there is considerable inter-observer variability. This is pertinent as function-sparing and adaptive IMRT have increased the number and frequency of delineation of OARs. We eva...