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Convertibility in databases

Information Processing Letters, 1980
The relational model for databases [ 2 J is based on a small number of mathematical concepts. For integrity reasons (i.e. to avoid unmanageable collections of data) some other concepts have been added to these. Examples are functional dependency and primary key. The latter concepts enable us to formalize invariant properties of objects from the reality
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A PDM converter

Papers presented at the February 7-9, 1956, joint ACM-AIEE-IRE western computer conference on - AIEE-IRE '56 (Western), 1956
Digitizing Pulse Duration Modulated (PDM) data at a rapid rate and presenting it in a suitable form for data reduction has been a problem of data reduction centers for some time. The Magnavox Series 200 Converter is designed to accept PDM data recorded on magnetic tape, automatically digitize it, and record the digital information on the magnetic tape ...
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Multilevel matrix converter

2012 IEEE 11th International Conference on Actual Problems of Electronics Instrument Engineering (APEIE), 2012
This article describes a new topology of Matrix Converters with improved conversion and harmonic factors. The output voltage generation techniques are observed and basic states of the proposed circle are given and explained bellow.
Vladimir V. Popov   +2 more
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To convert or not to convert to organic farming.

2003
AbstractAt the end of 2002, the Netherlands had approximately 1500 organic primary-producers. From the mid-1970s onwards, the area under organic farming grew by about 16% annually although this growth has been slowing down since 2001. According to some studies conducted in the Netherlands, only a very small percentage of conventional farmers seriously ...
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Transducers are type‐converters

Software: Practice and Experience, 1984
AbstractThe nature of a transducer is shown to be a mapping between representations (internal and external), analogous to the mapping between internal representations provided by typeconversion. Examples of this idea are given through programs in Ada and Modula.
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Multiplying D/A Converter

IEEE Transactions on Computers, 1974
A multiplying D/A converter (MDAC) based upon the use of bipolar high precision current sources and inverted ladder networks is described. It is shown that if super-gain IC operational amplifiers are used with current sources a converter accuracy of 0.01 percent over the full temperature range can be achieved.
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To convert or not to convert: lessons from the CONVERT trial

Nature Reviews Nephrology, 2009
Suphamai Bunnapradist, Flavio Vincenti
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Stability Effect of Load Converter on Source Converter in a Cascaded Buck Converter

IEEE Transactions on Power Electronics, 2023
Xi Zhang   +4 more
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Non-Isolated n-Stage High Step-up DC-DC Converter for Low Voltage DC Source Integration

IEEE Transactions on Energy Conversion, 2021
T Shanthi, Kumaravel Sundaramoorthy
exaly  

Other Applications of Converters and Systems of Converters

2010
The industrial application of power electronic converters and systems of converters are varied (Motorola, 1991, 1993). Power electronic converters of electrical energy for electrical engineering technologies have a wide spread in industry.
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