Matra

About: Matra is a based out in . It is known for research contribution in the topics: Signal & Detector. The organization has 1330 authors who have published 1216 publications receiving 17967 citations.

Effect of climate therapy and rehabilitation in mátra medical institute

Abstract: Our research we organised at the Matra Medical Institute in Matrahaza and Kekesteto among sick of asthma, COPD and hayfever. Our aim was to prove the effect of climate therapy in the Matra Medical Institute. The subalpine climate to plays a very important role in the cure of the Respiratory diseases, because to improve the life quality of the sick and reduce the medicine uses afther the therapy. Our researche took part more than 100 respiratory diseased. We analyse the data with SPSS.version16. We measure average, standard deviation, Chi²probe, t-probe.You can see our results in the article.

Motion measuring device using specialized coding

Abstract: A motion measurement device, more particularly designed for measurement of a rotation of a body around an axis. This device comprises a coded wheel drivably connected to said body for rotation and comprising a plurality of holes regularly distributed around said axis. Said holes are binary digits and for one digit is constituted by a simple hole passing through the wheel and, for the other, an open hole connected to the nearest edge of said wheel by a narrow slit. A sensor placed on the path of the holes and comprising two coils facing one another allows determination of the distance travelled by the moving body connected to said coded wheel. The speed and acceleration of the moving body can also be determined.

Method for setting up communication paths between access points of a switching system, and switching system implementing said method

Abstract: Access points of a system are located either in a packet transmission network or at interfaces connecting switching units provided with gateways with the packet network. Call servers store context data concerning terminals connected to the system through the access points. When a communication path is set up through a gateway to connect first and second terminals, the servers associate an addressing resource of the gateway in the packet network with a portion of the path providing the connection with the first terminal and an addressing resource of the gateway in the switching means with a second portion providing the connection with the second terminal, and store, in the context data concerning the second terminal, an identification of said addressing resource of the gateway in the packet network.

Switched mode DC-DC converter

Abstract: 1. A modulated DC-to-DC converter comprising a transformer who secondary (14) adapted to supply a load is provided with a rectifier (16, 17) and whose primary (12) is adapted to be connected to a DC source (U) through static switching means (18) enabling the cyclic ration of the voltage applied to the primary to be modulated, by control means (20), characterised in that the switching means comprise at least one solidstate static switching element (22) associated with an oscillatory circuit (26, 28), the inductance (26) is connected on one side to a primary terminal of the transformer and to one plate of the capacitor (28) and on the other side to one end of the switching element, the other end of the switching element is connected to the other capacitor plate and a diode is connected in anti-parallel with the switching element.

Design and Development of a 20K Stirling-Cycle Cooler for FIRST

Abstract: The Far Infra-Red Space Telescope (FIRST) is the 4th Cornerstone mission of the European Space Agency (ESA) ‘Horizon 2000’ space science programme and is designed to offer observational opportunities in the last poorly explored parts of the electromagnetic spectrum, the sub-millimetre and far infra-red. The cryogenic sub-system required for instrument cooling is based upon the use of mechanical coolers to achieve cooling of shields at approximately 65K, 20K and 4K. A further cooler capable of cooling to O.IK is to be provided by the scientific instrument.