Abstract: A RAID (redundant array of independent storage devices) storage system where a file is stored at a physical protection level corresponding to a RAID protection level defined by metadata included in and/or with the file to be stored.

Abstract: The invention relates to a node for managing network connectivity of a device comprising an embedded Universal Integrated Circuit Card (eUICC). The node is configured to provision the eUICC for network connectivity of the device. The method comprises acquiring an identity of at least one Subscription Manager-Data Preparation (SM-DP) entity, acquiring an identity of at least one Subscription Manager-Secure Router (SM-SR) entity, creating an association between the identity of the at least one SM-DP entity, the identity of the at least one SM-SR entity and an identity of the eUICC, and storing the created association, wherein the stored association subsequently can be changed for the eUICC by changing at least one of the identity of the at least one SM-DP entity and the identity of the at least one SM-SR entity with which the eUICC is to be associated.

Abstract: An air-to-ground network communication device may include a conductive groundplane and an antenna element. The conductive groundplane may be disposed to be substantially parallel to a surface of the earth. The antenna element may extend substantially perpendicularly away from the groundplane and may have an effective length between about 1?, to about 1.5?. The antenna element may be disposed at a distance of about 0.5? to about 1? from the groundplane.

Abstract: A method and a device for operating an arrangement of sound transducers according to the wave-field synthesis principle. In order to supply an extended audience region with the same signal, the same signal content is generated by at least two virtual sound sources, which are arranged such that the wavefronts thereof are directed only onto a part audience area, rather than generating only a single beam extending over the entire audience area. The wavefronts of the distributed virtual sound sources add up vectorially in the plane of the arrangement of sound transducers, whereby the effectiveness of the sound generation is increased.

Abstract: The present invention describes an apparatus comprising sound transducers based on the principle of wave field synthesis that can be compiled in a local design to form a freely scalable overall magnitude. The local design of the system ensures the free scalability. The computation complexity in the central system remains independent of the number of sound transducers in the overall system. In previously known apparatuses for reconstructing a sound field based on the principle of wave field synthesis, the demands on the central system rise with the number of sound transducers that it covers. For this reason too, the wave field synthesis is usually reduced to the horizontal plane of the listener, and the third dimension is lost in the reproduction of the sound events.

Abstract: A variable device for directing sound wavefronts. In one example, individual housings including sound transducers can be shifted relative to one another in such a way that a wavefront adapted to the respective reproduction requirements can be produced. This configuration can be re-designed by mechanically shifting the individual elements of the variable device again.

Abstract: A signal generator for creating a measuring signal comprising a cyclic prefix comprises a baseband signal generator for generating a baseband measuring signal and a channel emulator for emulating a channel in the baseband measuring signal resulting in a channel modified signal. Moreover, it comprises a modulator for modulating the channel modified signal and a cyclic prefix generating unit for generating and inserting a cyclic prefix into the modulated signal. The cyclic prefix generating unit is set up for generating the cyclic prefix in such a manner that a channel modified cyclic prefix is emulated.

Abstract: An air-to-ground network communication device may include a conductive groundplane and an antenna element. The conductive groundplane may be disposed to be substantially parallel to a surface of the earth. The antenna element may extend substantially perpendicularly away from the groundplane and may have an effective length between about 1? to about 1.5?. The antenna element may be disposed at a distance of about 0.5? to about 1? from the groundplane.

Abstract: The invention relates to a signal generating device for generating a signal including simulated channel fading characteristics. The signal generating device includes a fading simulating unit, a signal generating unit and a modulating unit. The signal generating unit generates a first number of symbols according to a number of transmitting means for a simulated transmission to a device under test. The fading simulating unit calculates from the first number of symbols a second number of faded symbols, wherein a number of signals to be output corresponds to a number of receiving means of the device under test, based on a set of filter parameters, and provides the calculated second number of faded symbols to the modulating means; and the modulating unit generates modulated signals to be output from the second number of faded symbols.

Abstract: A digital filter for filtering an input signal to form an output signal containing a coefficient multiplier and a moving-average filter. The coefficient multiplier is embodied to multiply values of the input signal by coefficients of the filter to form an intermediate signal. The moving-average filter is embodied to generate the output signal as a moving average of the intermediate signal.

Abstract: A measuring device serves to determine an active channel from a plurality of channels of known frequencies. In this context, it comprises a processor (11) which, in turn, comprises a transform unit (20). This transform unit (20) is embodied to transform the signal which contains the active channel or a signal (30) derived from this signal into a signal in the frequency domain (31). The processor (11) further contains a detection unit (28), which is embodied to detect the active channel in the signal in the frequency domain (31).

Abstract: An optical coupling system for coupling a first optical waveguide having a first core surrounded by a first sheath to a second optical waveguide having a second core surrounded by a second sheath. An end face of the first core of the first optical waveguide abuts an end face of the second core of the second optical waveguide at a coupling location and the second core is flush with the first core in the axial direction, wherein, in the region of the coupling location, over at least part of a predetermined axial portion, both the second sheath of the second optical waveguide and the first sheath of the first optical waveguide together form a cladding of the optical waveguide in the predetermined portion.

Abstract: A method and a corresponding device for supporting operating and/or changeover processes for a machine, in particular product type changeovers in the beverage processing industry. The method includes the creation of a description of the changeover process which can comprise a plurality of sub-steps, the processing of individual sub-steps, and the storing of the changeover process and/or the processed sub-steps.

Abstract: A hydraulic axle includes a reversible hydraulic pump. The hydraulic axle has a multi-surface cylinder with two retraction surfaces and two deployment surfaces. A first deployment surface and a first retraction surface are configured to interconnect with each other and separate from other surface during a rapid-traverse stroke. A pressure medium is configured to act on the second deployment surface to enable deployment.

Abstract: A method of building a wireless communication network between a plurality of pre-defined devices which include spatially distributed inverters for feeding electric energy into an AC power grid and which each have a spatially limited range in wireless communication is provided. The method includes the steps of assimilating the pre-defined devices for a limited period of time, and in the step of assimilating, generating at least one network ID and persistently storing the at least one network ID in each pre-defined device participating in the step of assimilating. The method further includes, after the step of assimilating, connecting each pre-defined device exclusively to such other pre-defined devices in which network IDs originating from the same step of assimilating are stored.

Abstract: A signal generator for creating a measuring signal comprising a cyclic prefix comprises a baseband signal generator for generating a baseband measuring signal and a channel emulator for emulating a channel in the baseband measuring signal resulting in a channel modified signal. Moreover, it comprises a modulator for modulating the channel modified signal and a cyclic prefix generating unit for generating and inserting a cyclic prefix into the modulated signal. The cyclic prefix generating unit is set up for generating the cyclic prefix in such a manner that a channel modified cyclic prefix is emulated.

Abstract: An air-to-ground network communication device may include a conductive groundplane and an antenna element. The conductive groundplane may be disposed to be substantially parallel to a surface of the earth. The antenna element may extend substantially perpendicularly away from the groundplane and may have an effective length between about 1? to about 1.5?. The antenna element may be disposed at a distance of about 0.5? to about 1? from the groundplane.

Abstract: An optical coupling system for coupling a first optical waveguide having a first core surrounded by a first sheath to a second optical waveguide having a second core surrounded by a second sheath. An end face of the first core of the first optical waveguide abuts an end face of the second core of the second optical waveguide at a coupling location and the second core is flush with the first core in the axial direction, wherein, in the region of the coupling location, over at least part of a predetermined axial portion, both the second sheath of the second optical waveguide and the first sheath of the first optical waveguide together form a cladding of the optical waveguide in the predetermined portion.

Abstract: A hydraulic pilot valve arrangement for pilot-controlling a valve includes at least one pilot valve configured to be activated electromagnetically in a pulse-width-modulated fashion. The pilot valve is configured to be activated ballistically or inversely ballistically. A hydraulic valve arrangement including the hydraulic pilot valve arrangement also has a valve configured to be pilot-controlled by the pilot valve arrangement.

Abstract: A method for examining at least one wafer (13) with regard to a contamination limit, in which the contamination potential of the resist (13a) of the wafer (13), which resist (13a) outgasses contaminating substances, is examined with regard to a contamination limit before the wafer (13) is exposed in an EUV projection exposure system (1). The method preferably includes: arranging the wafer (13) and/or a test disc coated with the same resist (13a) as the resist (13a) of the wafer (13) in a vacuum chamber (19), evacuating the vacuum chamber (19), and measuring the contamination potential of the contaminating substances outgassed from the wafer (13) in the evacuated vacuum chamber (19), and also comparing the contamination potential of the wafer (13) with a contamination limit. An EUV projection exposure system (1) for carrying out the method is also disclosed.