Abstract: A network node of a wireless communications network is provided in a means of transportation, for an aircraft, for ascertaining sources of interference, to a system with such a network node, to an associated method for ascertaining sources of interference of a wireless communications network provided in a means of transportation, for the aircraft, and to a computer program for executing the method. The network node includes an interference-power-ascertaining component, for ascertaining an interference power of an interfering radiation emitted from a source of interference, and a transmitting component for wireless or wirebound transmission of the ascertained interference power to a control device for determining at least one of a direction of the interfering radiation and a distance of the source of interference, including the position of the source of interference, on the basis of the ascertained interference power.

Abstract: The invention relates to an apparatus (1) for improving a stereo audio signal of an FM stereo radio receiver (10). It is suggested to employ components of a standard HE-ACC v2 decoder (40) in such apparatus (1) to efficiently recover the stereo audio signal (L\R?) while also exhibiting good signal quality. To that end, parametric stereo parameters (15) shall be quantized and submitted to such decoder (40) together with a mono-downmix signal (25). The decoder (25) can then easily recover the parametric stereo parameters (15) by de-quantizing them via a simple lookup table, and finally creating the stereo output signal (L?R?) from the de-quantized parametric stereo parameters and the mono-downmix signal (25). The apparatus (1) further includes a parameter estimation stage (5) which may again be embodied on the basis of components of a standard HE-ACC v2 encoder (65).

Abstract: The invention relates to a sensor network for determining the position of devices and gear in an aircraft. The sensor network exhibits several sensor nodes, which have an autonomous power supply. The sensor nodes can communicate wirelessly with each other and with a central processing unit. The position of each individual sensor node can be determined by evaluating high-frequency signal parameters.

Abstract: A hitch device for connecting a groomer vehicle having a first frame extending along a first axis, and an implement, in particular a rotary snow tiller, for grooming the snow covering of ski slopes and having a second frame extending crosswise to and symmetrically with respect to a second axis. The hitch device has an arm hinged to the first frame about a third axis perpendicular to the first axis, and about a fourth axis perpendicular to the first and third axis; a first actuator for adjusting the position of the arm about the third axis with respect to the first frame to lift and lower the implement; at least one second actuator for adjusting the position of the arm about the fourth axis with respect to the first frame; a movable coupling movable between the arm and one of the first and second frame; and a third actuator for adjusting the position of the arm in a plane crosswise to the fourth axis.

Abstract: A rotary snow tiller, for grooming the snow covering of ski slopes, which advances in a traveling direction along the ski slope, and has a frame; a shaft fitted with teeth and rotated with respect to the frame about an axis crosswise to the traveling direction; and an actuating device for imparting a reciprocating movement to the shaft with respect to the frame.

Abstract: A rotary snow tiller, for grooming the snow covering of ski slopes, which advances in a traveling direction along the ski slope, and has a frame; and a shaft fitted with teeth and rotated with respect to the frame about an axis crosswise to the traveling direction; each tooth being fitted movably to the shaft and selectively adjustable in length with respect to the shaft.

Abstract: A rotary snow tiller, for grooming the snow surface of ski slopes and designed to advance in a travelling direction, has a frame; a shaft rotating about an axis transverse to the travelling direction, and having teeth for breaking up the snow surface; a further shaft located behind the shaft, rotating about a further axis transverse to the travelling direction, and having further teeth for further breaking up the snow surface; and a finish mat located behind the further shaft.

Abstract: A rotary snow tiller for grooming the snow covering of ski slopes, and which advances in a traveling direction along the ski slope, and has a frame; and a shaft which is rotated with respect to the frame about a first axis crosswise to the traveling direction, and is fitted with tools, each of which extends along a second axis crosswise to the first axis, and is selectively adjustable about the second axis with respect to the first axis.

Abstract: A control device that shields a room from incoming signals includes an interference device which is adapted for querying an interference signal for rendering a signal that enters a room unrecognizable by superposition with the interference signal.

Abstract: A snow groomer has a first and second track; an internal combustion engine; a plurality of working devices; a user interface; a power transmission; a first computing block for determining a total power demand of the working devices; and a second computing block for determining a work point in a characteristic graph of the internal combustion engine as a function of total power demand and the fuel consumption of the internal combustion engine.

Abstract: The invention pertains to a metallic flat gasket with at least one metallic layer, wherein the metallic gasket features at least one sealing area and a compression limiting area that is realized in the form of a corrugated profile in at least one layer of the metallic gasket, wherein the corrugated profile is formed in the area of the compression limiter by several corrugations that extend on concentric circular lines. At least one first corrugation extends along at least one predetermined arc of a circle and does not extend in at least one predetermined sector of a circle. The flat gasket features at least one second interrupted corrugation that extends concentric to the first corrugation, has a different radius than the first corrugation and extends at least in the sector of a circle, in which the first corrugation does not extend, and does not extend in at least one sector of a circle, in which the first corrugation extends.

Abstract: The invention relates to a sensor network in an aircraft, which comprises several sensor nodes that communicate with a central data collection and evaluation unit via a radio transmission path. Data transmission can take place in various ways. For example, different frequency ranges are provided, from which the respective frequency range enabling the best data transmission quality is selected.

Abstract: The invention relates to a sensor network for determining the position of devices and gear in an aircraft. The sensor network exhibits several sensor nodes, which have an autonomous power supply. The sensor nodes can communicate wirelessly with each other and with a central processing unit. The position of each individual sensor node can be determined by evaluating high-frequency signal parameters.

Abstract: A control device that shields a room from incoming signals includes an interference device which is adapted for querying an interference signal for rendering a signal that enters a room unrecognisable by superposition with the interference signal.

Abstract: A rotary snow tiller, for grooming the snow surface of ski slopes and designed to advance in a travelling direction, has a frame; a shaft rotating about an axis transverse to the travelling direction, and having teeth for breaking up the snow surface; a further shaft located behind the shaft, rotating about a further axis transverse to the travelling direction, and having further teeth for further breaking up the snow surface; and a finish mat located behind the further shaft.

Abstract: A control device that shields a room from incoming signals includes a receiving device, an interference device and a transmitting device. By the receiving device transmission signals are received, from which an interference signal is determined in order to interfere with the transmission signal. This interference signal is emitted by way of the transmitting device.

Abstract: A pasty molding material is divided by a process wherein, for the division, the pasty molding material is brought into contact with at least on stream containing at least one fluid medium.

Abstract: The present invention refers to a method of infiltrating enamel for the prevention and/or treatment of carious lesions comprising (a) exposing an enamel area to a conditioner comprising hydrochloric acid; (b) exposing the conditioned enamel area to an infiltrant; and (c) curing the infiltrant. The present invention further refers to a kit for carrying out the method of infiltrating enamel, which comprises a conditioner comprising hydrochloric acid and an infiltrant comprising at least one low viscous dental resin. Alternatively, the kit comprises ready-to-use means for carrying out the method of infiltrating enamel, e.g. application strips with delivery pads soaked with conditioner or infiltrant. The present invention also refers to a method for identifying an infiltrant by calculation of the penetration coefficient, and to an infiltrant identified by the method having a penetration coefficient of >50 cm/s or comprising a low viscous light curing resin having a penetration coefficient of >50 cm/s.

Abstract: A flat seal having at least one metallic layer is disclosed, wherein the at least one metallic layer at least partially comprises a profile having an undulated structure in the cross-section on the side of the metallic layer. The profile on the side opposite of the undulated structure has a contour in which rounded sections and those provided with edges alternate.