نتایج جستجو برای: analog

تعداد نتایج: 53487  

2012

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...

1998
Alex Doboli Ranga Vemuri

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...

2004
MICHAEL FIELD

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...

1990
Robert Van Rijsinge A. A. R. M. Haggenburg C. de Vries Hans Wallinga

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 ...

Journal: :International Journal of Research in Engineering and Technology 2014

1993
Bruce J. MacLennan

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...

Journal: :iranian red crescent medical journal 0
reza goudarzi department of health management and economics, school of public health, tehran university of medical sciences, tehran, ir iran hojjat zeraati department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, ir iran; department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, ir iran. tel: +98-2188989126, fax: +98-2166495936 ali akbari sari department of health management and economics, school of public health, tehran university of medical sciences, tehran, ir iran; knowledge utilization research center, tehran university of medical sciences, tehran, ir iran arash rashidian department of health management and economics, school of public health, tehran university of medical sciences, tehran, ir iran; knowledge utilization research center, tehran university of medical sciences, tehran, ir iran kazem mohammad department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, ir iran

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...

2000
Takao KANEKO

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 ...

2007
Ranga Vemuri Adrian Nunez-Aldana Nagu R. Dhanwada Alex Doboli Paul Campisi Sree Ganesan

Critical to the success of analog synthesis in VASE is the accuracy of analog performance estimation at various levels of abstraction. The analog performance estimator (APE) in VASE is used during mixed signal partitioning, analog behavior synthesis as well as analog circuit synthesis. APE is capable of accepting the design parameters (bias current) of an analog component as input and determine...

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