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A VLSI implementation of logarithmic and exponential functions using a novel parabolic synthesis methodology compared to the CORDIC algorithm

High performance implementations of unary functions are important in many applications e.g. in the wireless communication area. This paper shows the development and VLSI implementation of unary functions like the logarithmic and exponential function, by using a novel approximation methodology based on parabolic synthesis, which is compared to the well known CORDIC algorithm. Both designs are synth

Statistical mechanics of electronic energy levels in semiconductors

It is shown, using Guggenheim's pressure ensemble that partial Gibbs free energies are the quantities determining equilibrium occupations of electronic levels and hence are the quantities that enter detailed balance relationships. It is also shown that the energy of an optical no-phonon transition between band states equals the corresponding free energy change. This is also true for transitions in

Configuration Management Stories from the Distributed Software Development Trenches

Distributed projects are generally recognized as being more complex and adding a number of new challenges to project management. Configuration management (CM) can be considered the infrastructure of all types of project being they co-located or distributed and lack of CM or badly implemented CM will hurt any type of project. In this paper, we take a closer look at the role of CM in distributed pro

Industrial Induction Heating - with a focus on multi coil solutions

Most types of materials and components use heating during the manufacturing process, with a large potential for cost and energy savings. Induction heating is the most energy efficient industrial heating technology for many applications, but so far technical limitations has delayed large scale introduction. The difficulties relate to heating of large flat and curved surfaces, and, perhaps most impo

Weighted Subspace Fitting of Interferometric Phases for Multibaseline SAR Interferometry

In this paper, we deal with the problem of exploiting baseline diversity of a multichannel interferometric SAR system to overcome the layover problem. The problem arises when different height contributions collapse in the same range-azimuth resolution cell, due to the presence of strong terrain slopes or discontinuities in the sensed scene. The multilook framework is adopted to counteract the pres