Sound recording has taken many forms as technological developments created new and improved ways of storing information. The earliest attempts to capture and reproduce sound used mechanical methods, as Edison’s machines that connected a large horn to a tiny stylus that traced grooves in a rotating cylinder. Optical systems have long been used for film sound, but analog optical systems are compl...

This paper deenes a VHDL-AMS subset for be-havioral synthesis of analog systems. The subset includes language constructs for describing most of the functional aspects pertaining to analog systems. Besides , these constructs can be implemented with electronic circuits. Functional aspects, which can be expressed with the subset, relate to two interacting parts. The analog part continuously proces...

Recently Stewart, Golubitsky and coworkers have formulated a general theory of networks of coupled cells. Their approach depends on groupoids, graphs, balanced equivalence relations and ‘quotient networks’. We present a combinatorial approach to coupled cell systems. While largely equivalent to that of Stewart et al., our approach is motivated by ideas coming from analog computers and avoids ab...

The translation of the specification of an analog device into the necessary set of measurements to be carried out by an industrial test facility, is discussed. Algorithms are developed to compute the number of testvectors needed to guarantee a certain parameter and to compare several possible testmethods, based on accuracy. An important input for these algorithms: the measurement error is also ...

Although analog computation was eclipsed by digital computation in the second half of the twentieth century, it is returning as an important alternative computing technology. Indeed, as explained in this report, theoretical results imply that analog computation can escape from the limitations of digital computation. Furthermore, analog computation has emerged as an important theoretical framewo...

background health-related quality of life (hrqol) is used as a measure to valuate healthcare interventions and guide policy making. the euroqol eq-5d is a widely used generic preference-based instrument to measure health-related quality of life. objectives the objective of this study was to develop a value set of the eq-5d health states for an iranian population. patients and methods this study...

An analog standard cell layout configuration is proposed for simplifying the design and reducing the man-hours for designing mixed analog-digital LSIs, and analog standard cells are fabricated for A-D and D-A converters with ∆-Σ modulators. This works seeks to implement 2-D cell placement with up-down and left-right mirror rotation and shorter high-impedance analog wiring than conventional 1-D ...