Results 261 to 270 of about 39,365 (311)
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Order Independent Switching Operations in Radially Operated Networks
2007 14th IEEE International Conference on Electronics, Circuits and Systems, 2007Radially operated networks may be switched to change configuration in order to improve performance. Changing one configuration into another involves finding and sequencing ON/OFF switching steps. This is in general a complex task as the switching step possibilities must be dynamically investigated in order neither to create meshes nor to lose ...
Pedro M. S. Carvalho +2 more
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Selective timing for the arterial switch operation
The Annals of Thoracic Surgery, 2004To determine outcomes for the arterial switch operation individualized according to the underlying anatomy and clinical status.A retrospective review of a consecutive series of infants less than 90 days of age who underwent the arterial switch operation at a single institution.From July 1993-April 2001, 117 infants underwent an arterial switch ...
Brian W, Duncan +8 more
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Double switch operation in a young infant
Cardiology in the Young, 2004We performed a combined Senning and arterial switch operation on a 2-month-old patient with congenitally corrected transposition, Ebstein's malformation producing severe tricuspid regurgitation, ventricular septal defect, pulmonary hypertension, and congestive heart failure. The tricuspid regurgitation was improved.
Nobuyuki, Ishibashi +2 more
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Follow-up of Arterial Switch Operation
The Thoracic and Cardiovascular Surgeon, 1991This report describes the experience of the Leiden University Hospital with the arterial switch operation for transposition of the great arteries, with and without ventricular septal defect, and for the Taussig-Bing-anomaly. The longest follow-up was 13 years and 9 months.
M G, Hazekamp +6 more
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Communications switching—From operators to photonics
Proceedings of the IEEE, 1987Very soon after Alexander Graham Bell invented the telephone, it became obvious that it would be impractical to extend wires from every telephone to all other telephones. To conserve copper and dollars, wires had to converge on central points where individual telephone-to-telephone connections would be made.
Stwart D. Personick +1 more
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1985
Chapter 11 discussed five aspects of digital switching architecture: terminal interfaces, switching network considerations, service circuits, control architectures,and maintenance diagnostics and administration. In this chapter, four operational switching systems have been selected to illustrate how the foregoing functions have been integrated into ...
Bernhard E. Keiser, Eugene Strange
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Chapter 11 discussed five aspects of digital switching architecture: terminal interfaces, switching network considerations, service circuits, control architectures,and maintenance diagnostics and administration. In this chapter, four operational switching systems have been selected to illustrate how the foregoing functions have been integrated into ...
Bernhard E. Keiser, Eugene Strange
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AN ELECTRICALLY OPERATED SKIN RESISTANCE SWITCH
Psychophysiology, 1971ABSTRACTA touch operated switch is described that uses a simple skin resistance detection circuit. This ‘isometric push‐button” type switch has no moving parts, is noiseless, and absorbs the minimum of energy from the subject. It was primarily designed for psychophysiological experiments where an operant response is required.
L, Macpherson +2 more
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Switching Operations and Commutation
1986In Chap. 2 the system components required for a general description of the operation of a converter connection were defined. Assuming ideal conditions these are Voltage sources whose time response is given by u (t), Transformers with the transformation ratio w1/w2 and in the case of multiphase systems a phase dieplacement between primary and
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The Arterial Switch Operation Before Jatene
Pediatric Cardiology, 2008Attempts at the arterial switch operation predated the Senning and the Mustard venous switch procedures. No patients survived the earlier arterial switch methods. Therefore, from the 1960s to the 1980s, venous switch surgeries became the dominant treatment method for transposition of the great arteries.
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The Duodenal Switch Operation for Morbid Obesity
Surgical Clinics of North America, 2005The duodenal switch provides excellent weight loss with preservation of good alimentation, even in the superobese. This is accomplished with acceptable operative mortality and minimal dietary limitations and metabolic sequelae. The results of the duodenal switch that are reported in the literature should remove any inhibitions that exist about the use ...
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