Results 261 to 270 of about 329,610 (317)
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20th Annual Symposium on Foundations of Computer Science (sfcs 1979), 1979
In this paper we study bijective a-transducers. We derive necessary and sufficient conditions on pairs of regular sets (R,S) such that a bijective a-transducer, mapping R cnto S exists. The results obtained allow the systematic construction of an a-transducer, mapping a set R onto a set S bijectively for surprisingly "different" regular sets R and S.
Hermann A. Maurer, Maurice Nivat
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In this paper we study bijective a-transducers. We derive necessary and sufficient conditions on pairs of regular sets (R,S) such that a bijective a-transducer, mapping R cnto S exists. The results obtained allow the systematic construction of an a-transducer, mapping a set R onto a set S bijectively for surprisingly "different" regular sets R and S.
Hermann A. Maurer, Maurice Nivat
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2015
Our objects of study are infinite sequences and how they can be transformed into each other. As transformational devices, we focus here on Turing Machines, sequential finite state transducers and Mealy Machines. For each of these choices, the resulting transducibility relation ≥ is a preorder on the set of infinite sequences.
Jörg Endrullis +3 more
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Our objects of study are infinite sequences and how they can be transformed into each other. As transformational devices, we focus here on Turing Machines, sequential finite state transducers and Mealy Machines. For each of these choices, the resulting transducibility relation ≥ is a preorder on the set of infinite sequences.
Jörg Endrullis +3 more
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New Generation Computing, 2006
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Gabriel Ciobanu +2 more
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Gabriel Ciobanu +2 more
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Fundamenta Informaticae, 2015
We discuss simple functional transductions defined by invertible Mealy automata under iteration and in particular the question when the orbit relation defined by iteration is rational. We identify a class of these automata that has relatively complicated orbits, yet some of them are still orbit rational and discuss a number of decision problems ...
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We discuss simple functional transductions defined by invertible Mealy automata under iteration and in particular the question when the orbit relation defined by iteration is rational. We identify a class of these automata that has relatively complicated orbits, yet some of them are still orbit rational and discuss a number of decision problems ...
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An Electromechanical Transducer
Transactions of the American Institute of Electrical Engineers, 1951As the telemetering art progresses under the impetus of both aircraft and industrial needs, the requirement for accurate transducing becomes more and more important. This article describes a null-balance type of transducer which is inherently capable of achieving an accuracy comparable to that of present-day transmission links.
J. F. Engelberger, H. W. Kretsch
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European Journal of Radiology, 1998
Sonography is facing a new technological revolution. Recent advances in ultrasound technology are increasing spatial, contrast and vascular resolution. Transducers play an important role in achieving these improvements; their technology is widely reviewed in this paper. Physics and technology relate to image quality and its clinical potentials.
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Sonography is facing a new technological revolution. Recent advances in ultrasound technology are increasing spatial, contrast and vascular resolution. Transducers play an important role in achieving these improvements; their technology is widely reviewed in this paper. Physics and technology relate to image quality and its clinical potentials.
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Information and Computation, 2018
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Sanjay Jain 0001 +3 more
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sanjay Jain 0001 +3 more
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Review of Scientific Instruments, 1948
A description is given of a transducer which utilizes, for the transformation of sonic to electrical energy, the electrokinetic potential developed by the movement of a fluid through a porous solid. The construction and calibration of the transducer are discussed, and results of measurements of the pressure fluctuations in oil pipe lines are presented.
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A description is given of a transducer which utilizes, for the transformation of sonic to electrical energy, the electrokinetic potential developed by the movement of a fluid through a porous solid. The construction and calibration of the transducer are discussed, and results of measurements of the pressure fluctuations in oil pipe lines are presented.
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Opposite Phased Transducer — Novel Type of Transducer
AIP Conference Proceedings, 2004Defect sizing is an important task giving input to fracture mechanics evaluation. The exact evaluation of sound field is the key factor to analyse precisely defects in materials. Sizing accuracy is affected by the size of the sound field. There are several methods available for sizing: SAFT, Acoustic Holography, Tip diffraction, Amplitude drop. In SAFT
Kniazev, V. +3 more
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Proceedings of IEEE Ultrasonics Symposium ULTSYM-94, 1994
Reverberations from reflections at the transducer surface are overlaid on first order echoes from deeper targets and sometimes obscure these heavily. A method to reduce this artifact consists of acquiring two scan lines in the same direction with the transducer displaced slightly.
null Nickel, null Torp, null Angelsen
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Reverberations from reflections at the transducer surface are overlaid on first order echoes from deeper targets and sometimes obscure these heavily. A method to reduce this artifact consists of acquiring two scan lines in the same direction with the transducer displaced slightly.
null Nickel, null Torp, null Angelsen
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